From 2a5ff14cb52cd6c053748562dbbfbd55cf099eb3 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:09:45 +0200
Subject: [PATCH 001/102] =?UTF-8?q?profile.php=20mit=20Nutzerbeitr=C3=A4ge?=
 =?UTF-8?q?n=20+=20css?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 content/profile.php |  86 +++++++++++++++++++++++-----------
 css/main.css        |  10 ++++
 css/profile.css     | 111 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 180 insertions(+), 27 deletions(-)
 create mode 100644 css/profile.css

diff --git a/content/profile.php b/content/profile.php
index 769b4fb..ed13d04 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -4,43 +4,75 @@
 -->
 
 <main class="form-page">
+    <div class="profile-layout-container">
 
-    <div class="form-container">
-        <form>
+        <!-- Linke Spalte: Profildaten -->
+        <div class="form-container">
+            <form>
+                <label class="input-label">Vorname</label>
+                <input type="text" name="Vorname" class="login-input" required
+                       placeholder="Vorname"
+                       value="<?php //DB-Daten ?>">
 
-            <label class="input-label">Vorname</label>
+                <label class="input-label">Nachname</label>
+                <input type="text" name="Nachname" class="login-input" required
+                       placeholder="Nachname"
+                       value="<?php //DB-Daten ?>">
 
-            <input type="text" name="Vorname" class="login-input" required
-                   placeholder="Vorname"
-                   value="<?php //DB-Daten ?>">
+                <label class="input-label">Email-Adresse</label>
+                <input type="email" name="Email" class="login-input" required
+                       placeholder="mustermann@web.de"
+                       value="<?php //DB-Daten ?>">
 
-            <label class="input-label">Nachname</label>
-            <input type="text" name="Nachname" class="login-input" required
-                   placeholder="Nachname"
-                   value="<?php //DB-Daten ?>">
+                <label class="input-label">Passwort</label>
+                <input type="password" name="Passwort" class="login-input"
+                       required placeholder="Passwort">
 
-            <label class="input-label">Email-Adresse</label>
-            <input type="email" name="Email" class="login-input" required
-                   placeholder="mustermann@web.de"
-                   value="<?php //DB-Daten ?>">
+                <button type="submit" class="login-button">
+                    Speichern
+                </button>
 
-            <label class="input-label">Passwort</label>
-            <input type="password" name="Passwort" class="login-input"
-                   required placeholder="Passwort">
+                <button type="button" class="login-button delete-account-button">
+                    Account löschen
+                </button>
+            </form>
+        </div>
 
-            <br>
+        <!-- Rechte Spalte: Eigene Beiträge -->
+        <div id="articlesFromUser" class="form-container">
+            <h2 class="section-title">Meine Beiträge</h2>
+            <div class="articles-list">
 
-            <button type="submit" class="login-button">
-                Speichern
-            </button>
+                <!-- Beispiel-Eintrag 1 (Wird spaeter per PHP wiederholt) -->
+                <div class="article-item">
+                    <div class="article-meta">
+                        <span class="article-date">29.05.2026</span>
+                        <span class="article-category">Technologie</span>
+                    </div>
+                    <h3 class="article-title">Die Zukunft von CSS Grid</h3>
+                    <div class="article-tags">
+                        <span class="tag">Webdesign</span>
+                        <span class="tag">Frontend</span>
+                    </div>
+                    <a href="edit-article.php?id=1" class="edit-link-button">Bearbeiten</a>
+                </div>
 
-            <br><br>
+                <!-- Beispiel-Eintrag 2 -->
+                <div class="article-item">
+                    <div class="article-meta">
+                        <span class="article-date">15.04.2026</span>
+                        <span class="article-category">Lifestyle</span>
+                    </div>
+                    <h3 class="article-title">Produktiv im Homeoffice</h3>
+                    <div class="article-tags">
+                        <span class="tag">Tipps</span>
+                        <span class="tag">Arbeit</span>
+                    </div>
+                    <a href="edit-article.php?id=2" class="edit-link-button">Bearbeiten</a>
+                </div>
 
-            <button type="button" class="login-button">
-                Account löschen
-            </button>
-
-        </form>
+            </div>
+        </div>
 
     </div>
 </main>
\ No newline at end of file
diff --git a/css/main.css b/css/main.css
index b0634b1..b448a22 100644
--- a/css/main.css
+++ b/css/main.css
@@ -212,3 +212,13 @@ a, button, input, select, textarea, label, main{
     border-radius: 10px;
     box-shadow: 0 6px 20px rgba(0,0,0,0.1);
 }
+
+.form-container {
+    flex: 1 1 450px;
+    padding: 30px;
+    background-color: white;
+    border: 1px solid #dbe3ec;
+    border-radius: 10px;
+    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
+    box-sizing: border-box;
+}
\ No newline at end of file
diff --git a/css/profile.css b/css/profile.css
new file mode 100644
index 0000000..9edc24a
--- /dev/null
+++ b/css/profile.css
@@ -0,0 +1,111 @@
+/* Roter Button fuer Account loeschen */
+.form-container #articlesFromUser {
+    flex: 1 1 450px;
+    padding: 30px;
+    background-color: white;
+    border: 1px solid #dbe3ec;
+    border-radius: 10px;
+    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
+    box-sizing: border-box;
+}
+
+.profile-layout-container {
+    display: flex;
+    flex-direction: row;
+    flex-wrap: wrap;
+    gap: 30px;
+    width: 100%;
+    align-items: flex-start;
+}
+
+.delete-account-button {
+    background-color: #dc2626;
+    margin-bottom: 0;
+}
+
+.delete-account-button:hover {
+    background-color: #b91c1c;
+}
+
+/* Beitragsliste Styling */
+.section-title {
+    margin-top: 0;
+    margin-bottom: 25px;
+    font-size: 1.5rem;
+    color: #1f2937;
+    border-bottom: 2px solid #eef2f7;
+    padding-bottom: 10px;
+}
+
+.articles-list {
+    display: flex;
+    flex-direction: column;
+    gap: 20px;
+}
+
+.article-item {
+    padding: 15px;
+    border: 1px solid #e5e7eb;
+    border-radius: 8px;
+    background-color: #f9fafb;
+    position: relative;
+}
+
+.article-meta {
+    display: flex;
+    justify-content: space-between;
+    font-size: 0.85rem;
+    color: #6b7280;
+    margin-bottom: 8px;
+}
+
+.article-category {
+    font-weight: bold;
+    color: #2563eb;
+}
+
+.article-title {
+    margin: 0 0 10px 0;
+    font-size: 1.2rem;
+    color: #1f2937;
+}
+
+.article-tags {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 6px;
+    margin-bottom: 15px;
+}
+
+.tag {
+    font-size: 0.75rem;
+    background-color: #e5e7eb;
+    color: #374151;
+    padding: 3px 8px;
+    border-radius: 4px;
+}
+
+/* Bearbeiten-Button als Link deklariert */
+.edit-link-button {
+    display: inline-block;
+    text-decoration: none;
+    font-size: 0.9rem;
+    font-weight: bold;
+    color: #2563eb;
+    border: 1px solid #2563eb;
+    padding: 6px 12px;
+    border-radius: 6px;
+    transition: background-color 0.2s, color 0.2s;
+}
+
+.edit-link-button:hover {
+    background-color: #2563eb;
+    color: white;
+}
+
+/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
+@media (max-width: 760px) {
+    .profile-layout-container {
+        flex-direction: column;
+    }
+}
\ No newline at end of file

From d4fa588c8fd5557cc6403f5b24a7d0bb3b24b219 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:11:40 +0200
Subject: [PATCH 002/102] refactoring

---
 content/profile.php | 2 +-
 css/profile.css     | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index ed13d04..aebcf00 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -39,7 +39,7 @@
         </div>
 
         <!-- Rechte Spalte: Eigene Beiträge -->
-        <div id="articlesFromUser" class="form-container">
+        <div id="articlesFromUser">
             <h2 class="section-title">Meine Beiträge</h2>
             <div class="articles-list">
 
diff --git a/css/profile.css b/css/profile.css
index 9edc24a..03d4fd4 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -1,4 +1,6 @@
-/* Roter Button fuer Account loeschen */
+/*
+CSS für die Profilseite
+ */
 .form-container #articlesFromUser {
     flex: 1 1 450px;
     padding: 30px;
@@ -18,6 +20,7 @@
     align-items: flex-start;
 }
 
+/* Roter Button für Account löschen */
 .delete-account-button {
     background-color: #dc2626;
     margin-bottom: 0;

From d5fbfc950fa36dff67bdac80d3659b651fbe3918 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:12:47 +0200
Subject: [PATCH 003/102] Update profile.css

---
 css/profile.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/css/profile.css b/css/profile.css
index 03d4fd4..2112875 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -1,7 +1,7 @@
 /*
 CSS für die Profilseite
  */
-.form-container #articlesFromUser {
+#articlesFromUser {
     flex: 1 1 450px;
     padding: 30px;
     background-color: white;

From dd1194a1c736480635d84f65d3d51db0b2f7fdc5 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:13:29 +0200
Subject: [PATCH 004/102] Update index.php

---
 index.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.php b/index.php
index a333e59..6d24a57 100644
--- a/index.php
+++ b/index.php
@@ -25,6 +25,7 @@ require_once $abs_path . "/php/controller/index-controller.php";
     <link rel="stylesheet" href="css/footer.css">
     <link rel="stylesheet" href="css/search-results.css">
     <link rel="stylesheet" href="css/createArticle.css">
+    <link rel="stylesheet" href="css/profile.css">
     <link rel="stylesheet" href="css/showArticle.css">
     <link rel="stylesheet" href="css/message.css">
     <title>EduForge</title>

From 72023a66346707525a5a7af046b1a26173d8c7a9 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:14:28 +0200
Subject: [PATCH 005/102] testing

---
 content/profile.php | 2 +-
 css/profile.css     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index aebcf00..8bdc2d3 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -39,7 +39,7 @@
         </div>
 
         <!-- Rechte Spalte: Eigene Beiträge -->
-        <div id="articlesFromUser">
+        <div class="form-container">
             <h2 class="section-title">Meine Beiträge</h2>
             <div class="articles-list">
 
diff --git a/css/profile.css b/css/profile.css
index 2112875..8a0bc2b 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -1,7 +1,7 @@
 /*
 CSS für die Profilseite
  */
-#articlesFromUser {
+.form-container {
     flex: 1 1 450px;
     padding: 30px;
     background-color: white;

From 60302e02b6fba72a34471ed4baf879d1bcbb4a2a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:15:15 +0200
Subject: [PATCH 006/102] Update profile.css

---
 css/profile.css | 1 +
 1 file changed, 1 insertion(+)

diff --git a/css/profile.css b/css/profile.css
index 8a0bc2b..e4c0ec3 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -110,5 +110,6 @@ CSS für die Profilseite
 @media (max-width: 760px) {
     .profile-layout-container {
         flex-direction: column;
+        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
     }
 }
\ No newline at end of file

From 26889a8b599fe6a8905ed7f77814afd6516d91ef Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:17:14 +0200
Subject: [PATCH 007/102] Update profile.css

---
 css/profile.css | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/css/profile.css b/css/profile.css
index e4c0ec3..aaf2c7d 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -110,6 +110,10 @@ CSS für die Profilseite
 @media (max-width: 760px) {
     .profile-layout-container {
         flex-direction: column;
-        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
+        align-items: center;
+    }
+    .form-container {
+        width: 100%;
+        max-width: 480px;
     }
 }
\ No newline at end of file

From 7b4abe32a7f9bc66797f7078095e8dd4f5e651d1 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:18:13 +0200
Subject: [PATCH 008/102] Update profile.css

---
 css/profile.css | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/css/profile.css b/css/profile.css
index aaf2c7d..de66ace 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -110,10 +110,9 @@ CSS für die Profilseite
 @media (max-width: 760px) {
     .profile-layout-container {
         flex-direction: column;
-        align-items: center;
     }
     .form-container {
+        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
         width: 100%;
-        max-width: 480px;
     }
 }
\ No newline at end of file

From 838b13e39f274ef909951e351225faebfb53621c Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:19:51 +0200
Subject: [PATCH 009/102] css

---
 css/main.css    | 7 +++++++
 css/profile.css | 4 ----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/css/main.css b/css/main.css
index b448a22..884d24d 100644
--- a/css/main.css
+++ b/css/main.css
@@ -221,4 +221,11 @@ a, button, input, select, textarea, label, main{
     border-radius: 10px;
     box-shadow: 0 6px 20px rgba(0,0,0,0.1);
     box-sizing: border-box;
+}
+
+/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
+@media (max-width: 760px) {
+    .form-page {
+        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
+    }
 }
\ No newline at end of file
diff --git a/css/profile.css b/css/profile.css
index de66ace..8a0bc2b 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -111,8 +111,4 @@ CSS für die Profilseite
     .profile-layout-container {
         flex-direction: column;
     }
-    .form-container {
-        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
-        width: 100%;
-    }
 }
\ No newline at end of file

From f63a2be01a2f0b66d24f2ffb05ef3041f5e81339 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:21:54 +0200
Subject: [PATCH 010/102] Update main.css

---
 css/main.css | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/css/main.css b/css/main.css
index 884d24d..c2762b1 100644
--- a/css/main.css
+++ b/css/main.css
@@ -226,6 +226,7 @@ a, button, input, select, textarea, label, main{
 /* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
 @media (max-width: 760px) {
     .form-page {
-        margin: 0 auto; /* Zentriert den gesamten Container horizontal */
+        justify-content: center;
+        padding: 20px 10px;
     }
 }
\ No newline at end of file

From 483dd4182e1caec969742d5eb135c2539c8df0a0 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:23:09 +0200
Subject: [PATCH 011/102] css

---
 css/main.css    | 4 ++++
 css/profile.css | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/css/main.css b/css/main.css
index c2762b1..5ad297c 100644
--- a/css/main.css
+++ b/css/main.css
@@ -229,4 +229,8 @@ a, button, input, select, textarea, label, main{
         justify-content: center;
         padding: 20px 10px;
     }
+    .form-container {
+        width: 100%;
+        max-width: 500px;
+    }
 }
\ No newline at end of file
diff --git a/css/profile.css b/css/profile.css
index 8a0bc2b..8bea840 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -110,5 +110,8 @@ CSS für die Profilseite
 @media (max-width: 760px) {
     .profile-layout-container {
         flex-direction: column;
+        align-items: center;
+        width: 100%;
     }
+
 }
\ No newline at end of file

From d7c7ef1041db9edaa07650e2571b37e75d53bd5f Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:24:34 +0200
Subject: [PATCH 012/102] Update main.css

---
 css/main.css | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/css/main.css b/css/main.css
index 5ad297c..a17d6fb 100644
--- a/css/main.css
+++ b/css/main.css
@@ -230,7 +230,8 @@ a, button, input, select, textarea, label, main{
         padding: 20px 10px;
     }
     .form-container {
+        flex: 0 1 auto;
         width: 100%;
-        max-width: 500px;
+        max-width: 450px;
     }
 }
\ No newline at end of file

From 9db31d4b8cd8f891b5fcc73e4bc43ca263f7f0c4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:25:51 +0200
Subject: [PATCH 013/102] testing

---
 css/main.css | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/css/main.css b/css/main.css
index a17d6fb..571d0e1 100644
--- a/css/main.css
+++ b/css/main.css
@@ -226,12 +226,12 @@ a, button, input, select, textarea, label, main{
 /* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
 @media (max-width: 760px) {
     .form-page {
-        justify-content: center;
-        padding: 20px 10px;
+        justify-content: center !important;
+        padding: 20px 10px !important;
     }
     .form-container {
-        flex: 0 1 auto;
-        width: 100%;
-        max-width: 450px;
+        flex: 0 1 auto !important;
+        width: 100% !important;
+        max-width: 450px !important;
     }
 }
\ No newline at end of file

From 79efee0979031b45c8b3cc8e98d1b428b7873f58 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:29:38 +0200
Subject: [PATCH 014/102] css

---
 css/main.css           | 10 +++++-----
 css/profile.css        |  8 ++++++++
 css/search-results.css |  6 +++---
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/css/main.css b/css/main.css
index 571d0e1..a17d6fb 100644
--- a/css/main.css
+++ b/css/main.css
@@ -226,12 +226,12 @@ a, button, input, select, textarea, label, main{
 /* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
 @media (max-width: 760px) {
     .form-page {
-        justify-content: center !important;
-        padding: 20px 10px !important;
+        justify-content: center;
+        padding: 20px 10px;
     }
     .form-container {
-        flex: 0 1 auto !important;
-        width: 100% !important;
-        max-width: 450px !important;
+        flex: 0 1 auto;
+        width: 100%;
+        max-width: 450px;
     }
 }
\ No newline at end of file
diff --git a/css/profile.css b/css/profile.css
index 8bea840..649c530 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -114,4 +114,12 @@ CSS für die Profilseite
         width: 100%;
     }
 
+    /* Überschreibt das flex-grow der main.css und erzwingt zentrieren: */
+    .form-container {
+        flex: 0 1 auto !important;
+        width: 100% !important;
+        max-width: 450px !important;
+        margin: 0 auto 20px auto;   /* zentrieren der Boxen */
+    }
+
 }
\ No newline at end of file
diff --git a/css/search-results.css b/css/search-results.css
index f2fc36f..43649b7 100644
--- a/css/search-results.css
+++ b/css/search-results.css
@@ -69,12 +69,12 @@ CSS für die Suchergebnis-Seite
 
 .s-res-filter-option input[type="radio"] {
     margin: 0;
-    accent-color: #3182ce; /* Moderne Färbung des Radio-Buttons */
+    accent-color: #3182ce;
 }
 
 /* --- HAUPTINHALT (ERGEBNISSE) --- */
 .s-res-main-content {
-    min-width: 0; /* Verhindert das Ausbrechen von Flex-Elementen */
+    min-width: 0;
 }
 
 .s-res-header {
@@ -164,7 +164,7 @@ CSS für die Suchergebnis-Seite
     transform: translateX(3px);
 }
 
-/* --- ERGEBNISSE PRO SEITE & PAGINIERUNG --- */
+/* ERGEBNISSE PRO SEITE & PAGINIERUNG */
 .s-res-pagination-footer {
     display: flex;
     justify-content: space-between;

From 2ded6300ab97a55ebfcc498e2e1efff7addc5c27 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:31:47 +0200
Subject: [PATCH 015/102] Update profile.css

---
 css/profile.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/css/profile.css b/css/profile.css
index 649c530..92bc505 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -119,7 +119,7 @@ CSS für die Profilseite
         flex: 0 1 auto !important;
         width: 100% !important;
         max-width: 450px !important;
-        margin: 0 auto 20px auto;   /* zentrieren der Boxen */
+        margin: 0 auto !important; /* Zentriert den gesamten Container horizontal */
     }
 
 }
\ No newline at end of file

From 98683197e0fe64a062db125720873e7961266bb9 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:33:00 +0200
Subject: [PATCH 016/102] Update profile.css

---
 css/profile.css | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/css/profile.css b/css/profile.css
index 92bc505..042df70 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -109,17 +109,21 @@ CSS für die Profilseite
 /* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
 @media (max-width: 760px) {
     .profile-layout-container {
-        flex-direction: column;
-        align-items: center;
-        width: 100%;
+        flex-direction: column !important;
+        align-items: center !important;
+        justify-content: center !important;
+        width: 100% !important;
+        margin: 0 auto !important;
     }
 
-    /* Überschreibt das flex-grow der main.css und erzwingt zentrieren: */
+    /* Erzwingt das Zentrieren der Boxen */
     .form-container {
         flex: 0 1 auto !important;
         width: 100% !important;
         max-width: 450px !important;
-        margin: 0 auto !important; /* Zentriert den gesamten Container horizontal */
+        margin-left: auto !important; /* Box von links in die Mitte */
+        margin-right: auto !important; /* Box von rechts in die Mitte */
+        margin-bottom: 20px !important;/* Abstand zwischen beiden Boxen */
     }
 
 }
\ No newline at end of file

From bd3d81e80c9476195215399885c91ae2a2d0c2f4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:35:01 +0200
Subject: [PATCH 017/102] css

---
 css/profile.css        | 10 +++++++++-
 css/search-results.css |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/css/profile.css b/css/profile.css
index 042df70..abaa648 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -106,8 +106,16 @@ CSS für die Profilseite
     color: white;
 }
 
-/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
+/* Responsive Anpassungen unter 760px (für z.B. Smartphones) */
 @media (max-width: 760px) {
+    .form-page {
+        display: flex !important;
+        flex-direction: column !important;
+        align-items: center !important;/* Block in die Mitte */
+        justify-content: center !important;
+        padding: 20px 10px !important;
+    }
+
     .profile-layout-container {
         flex-direction: column !important;
         align-items: center !important;
diff --git a/css/search-results.css b/css/search-results.css
index 43649b7..4fc5d97 100644
--- a/css/search-results.css
+++ b/css/search-results.css
@@ -247,7 +247,7 @@ CSS für die Suchergebnis-Seite
     cursor: not-allowed;
 }
 
-/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
+/* Responsive Anpassungen unter 760px (für z.B. Smartphones) */
 @media (max-width: 768px) {
     .s-res-layout-grid {
         grid-template-columns: 1fr; /* Stapelt Seitenleiste und Inhalt untereinander */

From 4d886051921c8b543a8b593054ce8b5b8689e35c Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:35:50 +0200
Subject: [PATCH 018/102] Update profile.css

---
 css/profile.css | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/css/profile.css b/css/profile.css
index abaa648..f23a2f2 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -117,11 +117,10 @@ CSS für die Profilseite
     }
 
     .profile-layout-container {
+        display: flex !important;
         flex-direction: column !important;
-        align-items: center !important;
-        justify-content: center !important;
+        align-items: center !important;     /* Zentriert weiße Boxen untereinander */
         width: 100% !important;
-        margin: 0 auto !important;
     }
 
     /* Erzwingt das Zentrieren der Boxen */
@@ -129,9 +128,8 @@ CSS für die Profilseite
         flex: 0 1 auto !important;
         width: 100% !important;
         max-width: 450px !important;
-        margin-left: auto !important; /* Box von links in die Mitte */
-        margin-right: auto !important; /* Box von rechts in die Mitte */
-        margin-bottom: 20px !important;/* Abstand zwischen beiden Boxen */
+        margin: 0 auto 20px auto !important; /* Zentriert die Boxen */
+        box-sizing: border-box !important;
     }
 
 }
\ No newline at end of file

From 339e3025b8cc44f8f14502658b4893c8bd683308 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:36:38 +0200
Subject: [PATCH 019/102] debugging

---
 content/profile.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 8bdc2d3..0812135 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -4,7 +4,7 @@
 -->
 
 <main class="form-page">
-    <div class="profile-layout-container">
+    <div class="profile-layout-container" style="background-color: #4a5568">
 
         <!-- Linke Spalte: Profildaten -->
         <div class="form-container">

From 4a67932002e656a31c8ad9abfad085cb05ae0d40 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:37:01 +0200
Subject: [PATCH 020/102] debugging

---
 content/profile.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index 0812135..9dd4ed0 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -3,8 +3,8 @@
     Inhalt: Das eigene Profil, wenn man angemeldet ist. Dort hat man die Möglichkeit seine Angaben zu ändern.
 -->
 
-<main class="form-page">
-    <div class="profile-layout-container" style="background-color: #4a5568">
+<main class="form-page" style="background-color: #4a5568">
+    <div class="profile-layout-container">
 
         <!-- Linke Spalte: Profildaten -->
         <div class="form-container">

From 2c0d52a3d502ea12ed73df982fd97a598782f4c8 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:38:57 +0200
Subject: [PATCH 021/102] Update main.css

---
 css/main.css | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/css/main.css b/css/main.css
index a17d6fb..6bc2df1 100644
--- a/css/main.css
+++ b/css/main.css
@@ -226,12 +226,6 @@ a, button, input, select, textarea, label, main{
 /* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
 @media (max-width: 760px) {
     .form-page {
-        justify-content: center;
-        padding: 20px 10px;
-    }
-    .form-container {
-        flex: 0 1 auto;
-        width: 100%;
-        max-width: 450px;
+        place-content: center;
     }
 }
\ No newline at end of file

From 00f9f9cd91c74f4eb64f0d305f2f553f22db9321 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:39:32 +0200
Subject: [PATCH 022/102] Update main.css

---
 css/main.css | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/css/main.css b/css/main.css
index 6bc2df1..b448a22 100644
--- a/css/main.css
+++ b/css/main.css
@@ -221,11 +221,4 @@ a, button, input, select, textarea, label, main{
     border-radius: 10px;
     box-shadow: 0 6px 20px rgba(0,0,0,0.1);
     box-sizing: border-box;
-}
-
-/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
-@media (max-width: 760px) {
-    .form-page {
-        place-content: center;
-    }
 }
\ No newline at end of file

From b93692c1603b623b2e9c692c429c7f31750fe6c8 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:42:55 +0200
Subject: [PATCH 023/102] css

---
 content/profile.php |  4 ++--
 css/profile.css     | 23 -----------------------
 2 files changed, 2 insertions(+), 25 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index 9dd4ed0..2c8b151 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -4,10 +4,10 @@
 -->
 
 <main class="form-page" style="background-color: #4a5568">
-    <div class="profile-layout-container">
+    <div class="flexbox">
 
         <!-- Linke Spalte: Profildaten -->
-        <div class="form-container">
+        <div class="container">
             <form>
                 <label class="input-label">Vorname</label>
                 <input type="text" name="Vorname" class="login-input" required
diff --git a/css/profile.css b/css/profile.css
index f23a2f2..07db827 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -108,28 +108,5 @@ CSS für die Profilseite
 
 /* Responsive Anpassungen unter 760px (für z.B. Smartphones) */
 @media (max-width: 760px) {
-    .form-page {
-        display: flex !important;
-        flex-direction: column !important;
-        align-items: center !important;/* Block in die Mitte */
-        justify-content: center !important;
-        padding: 20px 10px !important;
-    }
-
-    .profile-layout-container {
-        display: flex !important;
-        flex-direction: column !important;
-        align-items: center !important;     /* Zentriert weiße Boxen untereinander */
-        width: 100% !important;
-    }
-
-    /* Erzwingt das Zentrieren der Boxen */
-    .form-container {
-        flex: 0 1 auto !important;
-        width: 100% !important;
-        max-width: 450px !important;
-        margin: 0 auto 20px auto !important; /* Zentriert die Boxen */
-        box-sizing: border-box !important;
-    }
 
 }
\ No newline at end of file

From 0eba5f875a5f2062fe4d87cbee971c97fa1def26 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:43:31 +0200
Subject: [PATCH 024/102] Update profile.php

---
 content/profile.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 2c8b151..4fe72b2 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -39,7 +39,7 @@
         </div>
 
         <!-- Rechte Spalte: Eigene Beiträge -->
-        <div class="form-container">
+        <div class="container">
             <h2 class="section-title">Meine Beiträge</h2>
             <div class="articles-list">
 

From 46eb99b534b411bb828b4a5f1f9c59f361990405 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:44:14 +0200
Subject: [PATCH 025/102] Update profile.php

---
 content/profile.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index 4fe72b2..24925f3 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -3,9 +3,8 @@
     Inhalt: Das eigene Profil, wenn man angemeldet ist. Dort hat man die Möglichkeit seine Angaben zu ändern.
 -->
 
-<main class="form-page" style="background-color: #4a5568">
+<main class="form-page">
     <div class="flexbox">
-
         <!-- Linke Spalte: Profildaten -->
         <div class="container">
             <form>

From 52a34cd9b4470b8f8dc99e995ddd3fe3dba8be2a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 15:45:13 +0200
Subject: [PATCH 026/102] Update profile.css

---
 css/profile.css | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/css/profile.css b/css/profile.css
index 07db827..dca1cef 100644
--- a/css/profile.css
+++ b/css/profile.css
@@ -1,24 +1,6 @@
 /*
 CSS für die Profilseite
  */
-.form-container {
-    flex: 1 1 450px;
-    padding: 30px;
-    background-color: white;
-    border: 1px solid #dbe3ec;
-    border-radius: 10px;
-    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
-    box-sizing: border-box;
-}
-
-.profile-layout-container {
-    display: flex;
-    flex-direction: row;
-    flex-wrap: wrap;
-    gap: 30px;
-    width: 100%;
-    align-items: flex-start;
-}
 
 /* Roter Button für Account löschen */
 .delete-account-button {
@@ -104,9 +86,4 @@ CSS für die Profilseite
 .edit-link-button:hover {
     background-color: #2563eb;
     color: white;
-}
-
-/* Responsive Anpassungen unter 760px (für z.B. Smartphones) */
-@media (max-width: 760px) {
-
 }
\ No newline at end of file

From 88c369de321c17ba0ce3126d904979bc54e7764e Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Fri, 29 May 2026 16:00:31 +0200
Subject: [PATCH 027/102] =?UTF-8?q?profile.php=20dynamisch=20Beitr=C3=A4ge?=
 =?UTF-8?q?=20anzeigen=20(unvollst=C3=A4ndig?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 content/profile.php                           | 37 ++++++++++++++-----
 content/showArticle.php                       |  5 +--
 php/controller/profileArticles-controller.php | 34 +++++++++++++++++
 3 files changed, 63 insertions(+), 13 deletions(-)
 create mode 100644 php/controller/profileArticles-controller.php

diff --git a/content/profile.php b/content/profile.php
index 24925f3..a035aa5 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -2,7 +2,9 @@
     Content: Profil
     Inhalt: Das eigene Profil, wenn man angemeldet ist. Dort hat man die Möglichkeit seine Angaben zu ändern.
 -->
-
+<?php
+include_once 'php/controller/profileArticles-controller.php';
+?>
 <main class="form-page">
     <div class="flexbox">
         <!-- Linke Spalte: Profildaten -->
@@ -42,18 +44,33 @@
             <h2 class="section-title">Meine Beiträge</h2>
             <div class="articles-list">
 
-                <!-- Beispiel-Eintrag 1 (Wird spaeter per PHP wiederholt) -->
+                <!-- Beispiel-Eintrag 1 (Wird später per PHP wiederholt) -->
                 <div class="article-item">
                     <div class="article-meta">
-                        <span class="article-date">29.05.2026</span>
-                        <span class="article-category">Technologie</span>
+                        <span class="article-date"><?php if (isset($creationDate)) { echo htmlspecialchars($creationDate); } ?></span>
+                        <span class="article-category"><?php if (isset($category)) { echo htmlspecialchars($category); } ?></span>
                     </div>
-                    <h3 class="article-title">Die Zukunft von CSS Grid</h3>
-                    <div class="article-tags">
-                        <span class="tag">Webdesign</span>
-                        <span class="tag">Frontend</span>
-                    </div>
-                    <a href="edit-article.php?id=1" class="edit-link-button">Bearbeiten</a>
+                    <h3 class="article-title"><?php if (isset($title)) { echo htmlspecialchars($title); } ?></h3>
+                    <?php if (isset($tags) && !empty($tags)): ?>
+                        <div class="article-view-bottom-section">
+                            <div class="article-view-tags-label">Tags:</div>
+                            <div class="article-view-tags-list">
+                                <?php
+                                // Falls $tags ein String ist (z.B. "Web, CSS"), in ein Array umwandeln
+                                $tagArray = is_array($tags) ? $tags : explode(',', $tags);
+                                foreach ($tagArray as $tag):
+                                    $trimmedTag = trim($tag);
+                                    if (!empty($trimmedTag)):
+                                        ?>
+                                        <span class="article-view-tag-item"><?php echo htmlspecialchars($trimmedTag); ?></span>
+                                    <?php
+                                    endif;
+                                endforeach;
+                                ?>
+                            </div>
+                        </div>
+                    <?php endif; ?>
+                    <a href="" <!-- TODO --> class="edit-link-button">Bearbeiten</a>
                 </div>
 
                 <!-- Beispiel-Eintrag 2 -->
diff --git a/content/showArticle.php b/content/showArticle.php
index b069b88..968c0b2 100644
--- a/content/showArticle.php
+++ b/content/showArticle.php
@@ -15,7 +15,6 @@ include_once 'php/controller/showArticle-controller.php';
         <?php if (isset($category) && !empty($category)): ?>
             <span class="article-view-category"><?php echo htmlspecialchars($category); ?></span>
         <?php endif; ?>
-
         <h1 class="article-view-title">
             <?php if (isset($title)) { echo htmlspecialchars($title); } ?>
         </h1>
@@ -28,7 +27,7 @@ include_once 'php/controller/showArticle-controller.php';
 
     </div>
 
-    <!-- articleikel-Inhalt -->
+    <!-- Beitrags-Inhalt -->
     <div class="article-view-content">
         <?php if (isset($content)): ?>
             <!-- nl2br für Zeilenumbrüche -->
@@ -36,7 +35,7 @@ include_once 'php/controller/showArticle-controller.php';
         <?php endif; ?>
     </div>
 
-    <!-- articleikel-Endbereich (Tags) -->
+    <!-- Beitrags-Endbereich (Tags) -->
     <?php if (isset($tags) && !empty($tags)): ?>
         <div class="article-view-bottom-section">
             <div class="article-view-tags-label">Tags:</div>
diff --git a/php/controller/profileArticles-controller.php b/php/controller/profileArticles-controller.php
new file mode 100644
index 0000000..dd53dac
--- /dev/null
+++ b/php/controller/profileArticles-controller.php
@@ -0,0 +1,34 @@
+<?php
+/*
+ * Controller für die Liste der eigenen Beiträge eines Nutzers auf der eigenen Profilseite
+ */
+
+session_start();
+require_once 'php/model/Article.php';
+require_once 'php/model/ArticleManager.php';
+
+if (isset($_GET["id"])){
+    try {
+        $articleManager = ArticleManager::getInstance();
+        $article = $articleManager->getArticle($_GET["id"]);
+        if($article != null){
+            $title = $article->getTitle();
+            $content = $article->getContent();
+            $category = $article->getCategory();
+            $author = $article->getAuthor();
+            $tags = $article->getTags();
+            $creationDate = $article->getCreationDate();
+        }else{
+            $_SESSION["message"] = "article_not_found";
+            echo "article_not_found";
+        }
+    } catch (Exception $e){
+        $_SESSION["message"] = "internal_error";
+        echo "Fehler aufgetreten: " . $e->getMessage();
+    }
+}else{
+    $_SESSION["message"] = "article_not_found";
+    echo "article_not_found";
+}
+
+?>
\ No newline at end of file

From ff23e6c9a2dab43b98ebe1bcc9cc39aae765d19d Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:00:32 +0200
Subject: [PATCH 028/102] profileArticle-controller.php Implementierung

---
 content/profile.php                           |  6 +++-
 php/controller/profileArticles-controller.php | 29 +++++--------------
 php/controller/showArticle-controller.php     |  1 -
 php/model/ArticleManagerDAO.php               |  6 ++++
 4 files changed, 19 insertions(+), 23 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index a035aa5..9c4b06e 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -43,7 +43,11 @@ include_once 'php/controller/profileArticles-controller.php';
         <div class="container">
             <h2 class="section-title">Meine Beiträge</h2>
             <div class="articles-list">
-
+                <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
+                    <p class="alert-message is-error">
+                        Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+                    </p>
+                <?php elseif(isset($articles) && count($articles) > 0): ?>
                 <!-- Beispiel-Eintrag 1 (Wird später per PHP wiederholt) -->
                 <div class="article-item">
                     <div class="article-meta">
diff --git a/php/controller/profileArticles-controller.php b/php/controller/profileArticles-controller.php
index dd53dac..11e49d3 100644
--- a/php/controller/profileArticles-controller.php
+++ b/php/controller/profileArticles-controller.php
@@ -7,28 +7,15 @@ session_start();
 require_once 'php/model/Article.php';
 require_once 'php/model/ArticleManager.php';
 
-if (isset($_GET["id"])){
-    try {
-        $articleManager = ArticleManager::getInstance();
-        $article = $articleManager->getArticle($_GET["id"]);
-        if($article != null){
-            $title = $article->getTitle();
-            $content = $article->getContent();
-            $category = $article->getCategory();
-            $author = $article->getAuthor();
-            $tags = $article->getTags();
-            $creationDate = $article->getCreationDate();
-        }else{
-            $_SESSION["message"] = "article_not_found";
-            echo "article_not_found";
-        }
-    } catch (Exception $e){
-        $_SESSION["message"] = "internal_error";
-        echo "Fehler aufgetreten: " . $e->getMessage();
+try {
+    $author = "max.mustermann"; // TODO: später Nutzer aus der Session beziehen.
+    $articleManager = ArticleManager::getInstance();
+    $userArticles = $articleManager->getArticlesByAuthor($author);
+    if(!isset($userArticles)) {
+        $_SESSION["message"] = "user_has_no_articles";
     }
-}else{
-    $_SESSION["message"] = "article_not_found";
-    echo "article_not_found";
+} catch (Exception $e) {
+    $_SESSION["message"] = "internal_error";
 }
 
 ?>
\ No newline at end of file
diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index d9be3f5..ea27a0c 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -23,6 +23,5 @@ if (isset($_GET["id"])){
     }
 }else{
     $_SESSION["message"] = "article_not_found";
-    echo "article_not_found";
 }
 ?>
\ No newline at end of file
diff --git a/php/model/ArticleManagerDAO.php b/php/model/ArticleManagerDAO.php
index 95b04cc..99b93f8 100644
--- a/php/model/ArticleManagerDAO.php
+++ b/php/model/ArticleManagerDAO.php
@@ -62,6 +62,12 @@ interface ArticleManagerDAO
      */
     public function getAllArticles();
 
+    /**
+     * Gibt alle Beiträge eines Nutzer mit einer gegebenen ID aus.
+     * @param $author
+     * @return Article[]
+     */
+    public function getArticlesByAuthor($author);
 
 }
 ?>
\ No newline at end of file

From 2810bfdce226b89a89a6de6a925be2dedfb6e10f Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:15:00 +0200
Subject: [PATCH 029/102] Update profile.php

---
 content/profile.php | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index 9c4b06e..9328d35 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -47,15 +47,18 @@ include_once 'php/controller/profileArticles-controller.php';
                     <p class="alert-message is-error">
                         Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
                     </p>
-                <?php elseif(isset($articles) && count($articles) > 0): ?>
+                <?php elseif(isset($userArticles) && count($userArticles) > 0): ?>
                 <!-- Beispiel-Eintrag 1 (Wird später per PHP wiederholt) -->
                 <div class="article-item">
                     <div class="article-meta">
-                        <span class="article-date"><?php if (isset($creationDate)) { echo htmlspecialchars($creationDate); } ?></span>
-                        <span class="article-category"><?php if (isset($category)) { echo htmlspecialchars($category); } ?></span>
+                        <?php foreach ($userArticles as $userArticle): ?>
+                        <span class="article-date"><?php htmlspecialchars($userArticle->getTitle()); ?></span>
+                        <span class="article-category"><?php echo htmlspecialchars($userArticle->getCategory()); ?></span>
                     </div>
-                    <h3 class="article-title"><?php if (isset($title)) { echo htmlspecialchars($title); } ?></h3>
-                    <?php if (isset($tags) && !empty($tags)): ?>
+                    <h3 class="article-title"><?php echo htmlspecialchars($userArticle->getTitle()); ?></h3>
+                    <?php
+                    $tags = $userArticle->getTags();
+                    if (isset($tags) && !empty($tags)): ?>
                         <div class="article-view-bottom-section">
                             <div class="article-view-tags-label">Tags:</div>
                             <div class="article-view-tags-list">

From ea409dae07993e734bfc38a3b9ebdf3ace896bde Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:20:07 +0200
Subject: [PATCH 030/102] Update LocalArticleManager.php

---
 php/model/LocalArticleManager.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/php/model/LocalArticleManager.php b/php/model/LocalArticleManager.php
index b3e84cd..f686127 100644
--- a/php/model/LocalArticleManager.php
+++ b/php/model/LocalArticleManager.php
@@ -97,5 +97,25 @@ class LocalArticleManager implements ArticleManagerDAO {
         return is_array($articles) ? $articles : [];
     }
 
+    public function getArticlesByAuthor($author)
+    {
+        $articles = $this->getAllArticles();
+        $filteredArticles = [];
+
+        foreach ($articles as $article) {
+            if (isset($article['author']) && $article['author'] == $author) {
+                $filteredArticles[] = new Article(
+                    intval($article['id']),
+                    $article['title'],
+                    $article['content'],
+                    $article['author'],
+                    $article['category'],
+                    $article['tags'],
+                    $article['creationDate']
+                );
+            }
+        }
+        return $filteredArticles;
+    }
 }
 ?>
\ No newline at end of file

From dfdcc99111d2e7afdcca70432c9190566fb85357 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:23:30 +0200
Subject: [PATCH 031/102] Update profile.php

---
 content/profile.php | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index 9328d35..b9fe4e5 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -77,21 +77,7 @@ include_once 'php/controller/profileArticles-controller.php';
                             </div>
                         </div>
                     <?php endif; ?>
-                    <a href="" <!-- TODO --> class="edit-link-button">Bearbeiten</a>
-                </div>
-
-                <!-- Beispiel-Eintrag 2 -->
-                <div class="article-item">
-                    <div class="article-meta">
-                        <span class="article-date">15.04.2026</span>
-                        <span class="article-category">Lifestyle</span>
-                    </div>
-                    <h3 class="article-title">Produktiv im Homeoffice</h3>
-                    <div class="article-tags">
-                        <span class="tag">Tipps</span>
-                        <span class="tag">Arbeit</span>
-                    </div>
-                    <a href="edit-article.php?id=2" class="edit-link-button">Bearbeiten</a>
+                    <a href="index.php?pfad=createArticle" class="edit-link-button">Bearbeiten</a>
                 </div>
 
             </div>

From 43bd452a3063d37e952d909c97db9ab4489fe9b7 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:26:46 +0200
Subject: [PATCH 032/102] Update profile.php

---
 content/profile.php | 69 ++++++++++++++++++++++++---------------------
 1 file changed, 37 insertions(+), 32 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index b9fe4e5..5c3eb60 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -47,39 +47,44 @@ include_once 'php/controller/profileArticles-controller.php';
                     <p class="alert-message is-error">
                         Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
                     </p>
-                <?php elseif(isset($userArticles) && count($userArticles) > 0): ?>
-                <!-- Beispiel-Eintrag 1 (Wird später per PHP wiederholt) -->
-                <div class="article-item">
-                    <div class="article-meta">
-                        <?php foreach ($userArticles as $userArticle): ?>
-                        <span class="article-date"><?php htmlspecialchars($userArticle->getTitle()); ?></span>
-                        <span class="article-category"><?php echo htmlspecialchars($userArticle->getCategory()); ?></span>
-                    </div>
-                    <h3 class="article-title"><?php echo htmlspecialchars($userArticle->getTitle()); ?></h3>
-                    <?php
-                    $tags = $userArticle->getTags();
-                    if (isset($tags) && !empty($tags)): ?>
-                        <div class="article-view-bottom-section">
-                            <div class="article-view-tags-label">Tags:</div>
-                            <div class="article-view-tags-list">
-                                <?php
-                                // Falls $tags ein String ist (z.B. "Web, CSS"), in ein Array umwandeln
-                                $tagArray = is_array($tags) ? $tags : explode(',', $tags);
-                                foreach ($tagArray as $tag):
-                                    $trimmedTag = trim($tag);
-                                    if (!empty($trimmedTag)):
-                                        ?>
-                                        <span class="article-view-tag-item"><?php echo htmlspecialchars($trimmedTag); ?></span>
-                                    <?php
-                                    endif;
-                                endforeach;
-                                ?>
-                            </div>
-                        </div>
-                    <?php endif; ?>
-                    <a href="index.php?pfad=createArticle" class="edit-link-button">Bearbeiten</a>
-                </div>
+                <?php elseif (isset($userArticles) && count($userArticles) > 0): ?>
 
+                    <?php foreach ($userArticles as $userArticle): ?>
+                        <!-- Ein einzelner Artikel-Eintrag -->
+                        <div class="article-item">
+                            <div class="article-meta">
+                                <span class="article-date"><?php echo htmlspecialchars($userArticle->getCreationDate()); ?></span>
+                                <span class="article-category"><?php echo htmlspecialchars($userArticle->getCategory()); ?></span>
+                            </div>
+                            <h3 class="article-title"><?php echo htmlspecialchars($userArticle->getTitle()); ?></h3>
+
+                            <?php
+                            $tags = $userArticle->getTags();
+                            if (isset($tags) && !empty($tags)): ?>
+                                <div class="article-view-bottom-section">
+                                    <div class="article-view-tags-label">Tags:</div>
+                                    <div class="article-view-tags-list">
+                                        <?php
+                                        $tagArray = is_array($tags) ? $tags : explode(',', $tags);
+                                        foreach ($tagArray as $tag):
+                                            $trimmedTag = trim($tag);
+                                            if (!empty($trimmedTag)):
+                                                ?>
+                                                <span class="article-view-tag-item"><?php echo htmlspecialchars($trimmedTag); ?></span>
+                                            <?php
+                                            endif;
+                                        endforeach;
+                                        ?>
+                                    </div>
+                                </div>
+                            <?php endif; ?>
+                            <a href="index.php?pfad=createArticle" class="edit-link-button">Bearbeiten</a>
+                        </div>
+                    <?php endforeach; ?>
+
+                <?php else: ?>
+                    <p>Noch keine Beiträge vorhanden.</p>
+                <?php endif; ?>
             </div>
         </div>
 

From 2998a7bf22bca98189c18cf117e89209f4b14692 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:28:38 +0200
Subject: [PATCH 033/102] testing

---
 php/controller/profileArticles-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/profileArticles-controller.php b/php/controller/profileArticles-controller.php
index 11e49d3..02b46fd 100644
--- a/php/controller/profileArticles-controller.php
+++ b/php/controller/profileArticles-controller.php
@@ -8,7 +8,7 @@ require_once 'php/model/Article.php';
 require_once 'php/model/ArticleManager.php';
 
 try {
-    $author = "max.mustermann"; // TODO: später Nutzer aus der Session beziehen.
+    $author = "max.mustermann1"; // TODO: später Nutzer aus der Session beziehen.
     $articleManager = ArticleManager::getInstance();
     $userArticles = $articleManager->getArticlesByAuthor($author);
     if(!isset($userArticles)) {

From d3c190096ac9763c12bce25723327141f245b966 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:30:09 +0200
Subject: [PATCH 034/102] Update profile.php

---
 content/profile.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 5c3eb60..5740249 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -83,7 +83,8 @@ include_once 'php/controller/profileArticles-controller.php';
                     <?php endforeach; ?>
 
                 <?php else: ?>
-                    <p>Noch keine Beiträge vorhanden.</p>
+                    <p>Du hast noch keine Beiträge erstellt.</p>
+                    <a href="index.php?pfad=createArticle" class="nav__item nav__button">Beitrag erstellen</a>
                 <?php endif; ?>
             </div>
         </div>

From 2d03b1f05111f47ac3f2c9dc5b4b0f555b2c53a8 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:31:00 +0200
Subject: [PATCH 035/102] Update profile.php

---
 content/profile.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 5740249..ab174e4 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -84,7 +84,7 @@ include_once 'php/controller/profileArticles-controller.php';
 
                 <?php else: ?>
                     <p>Du hast noch keine Beiträge erstellt.</p>
-                    <a href="index.php?pfad=createArticle" class="nav__item nav__button">Beitrag erstellen</a>
+                    <a href="index.php?pfad=createArticle" class="login-button">Beitrag erstellen</a>
                 <?php endif; ?>
             </div>
         </div>

From 53b593b3804a00c4862b062119f67bb9abfd7f6d Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:32:51 +0200
Subject: [PATCH 036/102] Update profile.php

---
 content/profile.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index ab174e4..a925748 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -84,7 +84,9 @@ include_once 'php/controller/profileArticles-controller.php';
 
                 <?php else: ?>
                     <p>Du hast noch keine Beiträge erstellt.</p>
-                    <a href="index.php?pfad=createArticle" class="login-button">Beitrag erstellen</a>
+                    <div class="article-link">
+                        <a href="index.php?pfad=createArticle">Beitrag erstellen</a>
+                    </div>
                 <?php endif; ?>
             </div>
         </div>

From 497ce5bdb4e661cda1180cd474bb02e4f0d9187a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:33:45 +0200
Subject: [PATCH 037/102] Update profile.php

---
 content/profile.php | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/content/profile.php b/content/profile.php
index a925748..86df055 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -84,9 +84,7 @@ include_once 'php/controller/profileArticles-controller.php';
 
                 <?php else: ?>
                     <p>Du hast noch keine Beiträge erstellt.</p>
-                    <div class="article-link">
-                        <a href="index.php?pfad=createArticle">Beitrag erstellen</a>
-                    </div>
+                    <a href="index.php?pfad=createArticle" class="category-link">Beitrag erstellen</a>
                 <?php endif; ?>
             </div>
         </div>

From fec3cbb550d375707b8cfd04b199c298888452a4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:36:46 +0200
Subject: [PATCH 038/102] Update profile.php

---
 content/profile.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 86df055..3d75472 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -84,7 +84,9 @@ include_once 'php/controller/profileArticles-controller.php';
 
                 <?php else: ?>
                     <p>Du hast noch keine Beiträge erstellt.</p>
-                    <a href="index.php?pfad=createArticle" class="category-link">Beitrag erstellen</a>
+                    <button type="button" class="login-button" onclick="window.location.href='index.php?pfad=createArticle';">
+                        Beitrag erstellen!
+                    </button>
                 <?php endif; ?>
             </div>
         </div>

From 4a7bfa95677acb02b8925f064b045ca25c8bcdd8 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:37:48 +0200
Subject: [PATCH 039/102] Update profileArticles-controller.php

---
 php/controller/profileArticles-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/profileArticles-controller.php b/php/controller/profileArticles-controller.php
index 02b46fd..11e49d3 100644
--- a/php/controller/profileArticles-controller.php
+++ b/php/controller/profileArticles-controller.php
@@ -8,7 +8,7 @@ require_once 'php/model/Article.php';
 require_once 'php/model/ArticleManager.php';
 
 try {
-    $author = "max.mustermann1"; // TODO: später Nutzer aus der Session beziehen.
+    $author = "max.mustermann"; // TODO: später Nutzer aus der Session beziehen.
     $articleManager = ArticleManager::getInstance();
     $userArticles = $articleManager->getArticlesByAuthor($author);
     if(!isset($userArticles)) {

From 317f4c0ce95b8291609639899aa998fb4b6953d4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 18:13:06 +0200
Subject: [PATCH 040/102] ArticleManager fehlende Implementationen

---
 content/updateArticle.php                   | 86 +++++++++++++++++++++
 php/controller/updateArticle-controller.php | 56 ++++++++++++++
 php/model/ArticleManagerDAO.php             | 29 ++++---
 php/model/LocalArticleManager.php           | 53 ++++++++++++-
 4 files changed, 205 insertions(+), 19 deletions(-)
 create mode 100644 content/updateArticle.php
 create mode 100644 php/controller/updateArticle-controller.php

diff --git a/content/updateArticle.php b/content/updateArticle.php
new file mode 100644
index 0000000..600f2a5
--- /dev/null
+++ b/content/updateArticle.php
@@ -0,0 +1,86 @@
+<?php
+session_start();
+?>
+<!--
+    Seite: Beitrag erstellen
+    Inhalt: Formular für die Erstellung eines neuen Beitrags
+-->
+<form method="post" action="php/controller/updateArticle-controller.php" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+
+    <main class="editor-main">
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
+            <p class="alert-message is-error">
+                Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
+            <p class="alert-message is-error">
+                Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
+            </p>
+        <?php endif; ?>
+        <input type="text" id="title" name="title" value="<?php if (isset($title) && !empty($title)){echo htmlspecialchars($title);} ?>" placeholder="Titel hier eingeben" required>
+        <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
+            <?php if (isset($content) && !empty($content)){echo htmlspecialchars($content);} ?>
+        </textarea>
+    </main>
+
+    <!-- Seitenleiste -->
+    <aside class="editor-sidebar">
+
+        <div class="sidebar-block">
+            <button type="submit" class="btn-publish">Änderungen speichern</button>
+        </div>
+
+        <div class="sidebar-block">
+            <label for="category">Kategorie <span class="required">*</span></label>
+            <select id="category" name="category" required>
+                <option value="<?php if (isset($category) && !empty($category)){echo htmlspecialchars($category);} ?>" disabled selected>Kategorie wählen...</option>
+
+                <optgroup label="Sprachen">
+                    <option value="deutsch">Deutsch</option>
+                    <option value="englisch">Englisch</option>
+                    <option value="franzoesisch">Französisch</option>
+                    <option value="latein">Latein</option>
+                    <option value="literatur">Literatur</option>
+                </optgroup>
+
+                <optgroup label="MINT">
+                    <option value="mathe">Mathematik</option>
+                    <option value="biologie">Biologie</option>
+                    <option value="chemie">Chemie</option>
+                    <option value="physik">Physik</option>
+                    <option value="informatik">Informatik</option>
+                    <option value="astronomie">Astronomie</option>
+                </optgroup>
+
+                <optgroup label="Gesellschaft & Werte">
+                    <option value="geschichte">Geschichte</option>
+                    <option value="erdkunde">Erdkunde</option>
+                    <option value="sozialkunde">Sozialkunde</option>
+                    <option value="wirtschaft">Wirtschaftskunde</option>
+                    <option value="religion">Religion</option>
+                    <option value="ethik">Ethikunterricht</option>
+                    <option value="philosophie">Philosophie</option>
+                    <option value="psychologie">Psychologie</option>
+                    <option value="kunst">Kunst</option>
+                    <option value="musik">Musik</option>
+                    <option value="theater">Theater</option>
+                </optgroup>
+
+                <optgroup label="Technik & Praxis">
+                    <option value="technik">Technik</option>
+                    <option value="werken">Werken</option>
+                    <option value="hauswirtschaft">Hauswirtschaft</option>
+                    <option value="sport">Sport</option>
+                </optgroup>
+            </select>
+        </div>
+
+        <div class="sidebar-block">
+            <label for="tags">Schlagwörter</label>
+            <input type="text" id="tags" name="tags" value="<?php if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);} ?>" placeholder="z.B. Technik, IT (mit Komma trennen)">
+        </div>
+
+    </aside>
+
+</form>
diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
new file mode 100644
index 0000000..60c1180
--- /dev/null
+++ b/php/controller/updateArticle-controller.php
@@ -0,0 +1,56 @@
+<?php
+session_start();
+require_once '../model/LocalArticleManager.php';
+require_once '../model/ArticleManager.php';
+
+// Angaben aus übergebener ID setzen:
+if (isset($_GET["id"])){ // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
+    try {
+        $articleManager = ArticleManager::getInstance();
+        $article = $articleManager->getArticle($_GET["id"]);
+        if($article != null){
+            $title = $article->getTitle();
+            $content = $article->getContent();
+            $category = $article->getCategory();
+            $author = $article->getAuthor();
+            $tags = $article->getTags();
+        }else{
+            $_SESSION["message"] = "article_not_found";
+            echo "article_not_found";
+        }
+    } catch (Exception $e){
+        $_SESSION["message"] = "internal_error";
+        echo "Fehler aufgetreten: " . $e->getMessage();
+    }
+}else{
+    $_SESSION["message"] = "article_not_found";
+}
+
+// Wenn "speichern" gedrückt wurde:
+if ($_SERVER["REQUEST_METHOD"] === "POST") {
+    if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
+        $_SESSION["message"] = "missing_parameters";
+        header("location: ../../index.php?pfad=updateArticle");
+    } else {
+
+        $title = $_POST["title"];
+        $content = $_POST["content"];
+        $category = $_POST["category"];
+        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
+        $tags = $_POST["tags"];
+
+        try {
+            $articleManager = ArticleManager::getInstance();
+            $articleManager->updateArticle($title, $content, $author, $category, $tags);
+        } catch (Exception $e){
+            $_SESSION["message"] = "internal_error";
+        }
+        $_SESSION["message"] = "new_article";
+        // Weiterleitung zur Homepage
+        header("location: ../../index.php");
+        exit();
+
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/php/model/ArticleManagerDAO.php b/php/model/ArticleManagerDAO.php
index 99b93f8..ac5dc42 100644
--- a/php/model/ArticleManagerDAO.php
+++ b/php/model/ArticleManagerDAO.php
@@ -21,26 +21,23 @@ interface ArticleManagerDAO
     public function addArticle($title, $content, $author, $category, $tags);
 
     /**
-     * Ein angemeldeter Nutzer bearbeitet einen Beitrag.
-     * $id ID des Beitrags
-     * $title Titel des Beitrags
-     * $content Der Inhalt des Beitrags
-     * $author dem Author des des Beitrags (NID oder email)
+     * Ändert den gespeicherten Beitrag eines übergebenen Beitrags und eines Autors.
+     * Es wird geprüft, ob der zu änderne Beitrag existiert und ob der übergebene Autor der Autor des originalen
+     * Beitrages ist.
+     * @param $article
+     * @param $author
+     * @return void
      *
-     * Mögliche Exceptions:
-     * TODO Fehlerbeschreibung hinzufügen
+     * TODO: Fehlerbeschreibung hinzufügen
      */
-    public function updateArticle($id, $title, $content, $author);
+    public function updateArticle($article, $author);
 
-    /*
-     * Ein angemeldeter Nutzer löscht einen seiner Beiträge.
-     * $id ID des Beitrags
-     * $title Titel des Beitrags
-     * $content Der Inhalt des Beitrags
-     * $author dem Author des des Beitrags (NID oder email)
+    /**
+     * Löscht einen Beitrag aus übergebener ID.
+     * @param $id
+     * @return void
      *
-     * Mögliche Exceptions:
-     * TODO Fehlerbeschreibung hinzufügen
+     * TODO: Fehlerbeschreibung hinzufügen
      */
     public function deleteArticle($id);
 
diff --git a/php/model/LocalArticleManager.php b/php/model/LocalArticleManager.php
index f686127..4e72b0a 100644
--- a/php/model/LocalArticleManager.php
+++ b/php/model/LocalArticleManager.php
@@ -62,14 +62,61 @@ class LocalArticleManager implements ArticleManagerDAO {
         $this->saveArticle($articles);
     }
 
-    public function updateArticle($id, $title, $content, $author)
+    public function updateArticle($article, $author)
     {
-        // TODO: Implement updateArticle() method.
+        if (empty($article)) {
+            return;
+        }
+
+        // Berechtigungsprüfung:
+        if ($article->getAuthor() !== $author) {
+            // TODO: Implement Exception (z.B. throw new Exception("Nicht autorisiert"));
+            return;
+        }
+
+        $articles = $this->getAllArticles();
+        $updated = false;
+
+        // Beitrag aktualisieren:
+        foreach ($articles as $index => $storedArticle) {
+            if (isset($storedArticle['id']) && $storedArticle['id'] == $article->getId()) {
+                $articles[$index] = [
+                    "id" => $article->getId(),
+                    "title" => $article->getTitle(),
+                    "content" => $article->getContent(),
+                    "author" => $article->getAuthor(),
+                    "category" => $article->getCategory(),
+                    "tags" => $article->getTags(),
+                    "creationDate" => $article->getCreationDate() // Behält das originale Erstelldatum bei
+                ];
+                $updated = true;
+                break;
+            }
+        }
+        
+        // Nur speichern, wenn Beitrag geändert wurde:
+        if ($updated) {
+            $this->saveArticle($articles);
+        }
     }
 
     public function deleteArticle($id)
     {
-        // TODO: Implement deleteArticle() method.
+        $articles = $this->getAllArticles();
+        $articleFound = false;
+
+        foreach ($articles as $index => $article) {
+            if (isset($article['id']) && $article['id'] == $id) {
+                unset($articles[$index]);
+                $articleFound = true;
+                break; // Schleife abbrechen, da die ID eindeutig ist
+            }
+        }
+
+        if ($articleFound) {
+            // array_values stellt sicher, dass die Array-Keys wieder fortlaufend bei 0 beginnen
+            $this->saveArticle(array_values($articles));
+        }
     }
 
     public function getArticle($id)

From 75d2f17a3f573f501b59ae19d1a9174a923fde1f Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 18:18:26 +0200
Subject: [PATCH 041/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 60c1180..93e303b 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -2,6 +2,7 @@
 session_start();
 require_once '../model/LocalArticleManager.php';
 require_once '../model/ArticleManager.php';
+require_once '../model/Article.php';
 
 // Angaben aus übergebener ID setzen:
 if (isset($_GET["id"])){ // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
@@ -31,17 +32,18 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=updateArticle");
+        exit();
     } else {
 
-        $title = $_POST["title"];
-        $content = $_POST["content"];
-        $category = $_POST["category"];
+        $newTitle = $_POST["title"];
+        $newContent = $_POST["content"];
+        $newCategory = $_POST["category"];
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
-        $tags = $_POST["tags"];
+        $newTags = $_POST["tags"];
 
         try {
             $articleManager = ArticleManager::getInstance();
-            $articleManager->updateArticle($title, $content, $author, $category, $tags);
+            $articleManager->updateArticle(new Article($newTitle, $newContent, $newCategory, $author, $newTags), $author);
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";
         }

From f1986bc3f7d3d1b8f830d3b1cd41f8375557b613 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 18:18:31 +0200
Subject: [PATCH 042/102] Update LocalArticleManager.php

---
 php/model/LocalArticleManager.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/model/LocalArticleManager.php b/php/model/LocalArticleManager.php
index 4e72b0a..5f18c32 100644
--- a/php/model/LocalArticleManager.php
+++ b/php/model/LocalArticleManager.php
@@ -93,7 +93,7 @@ class LocalArticleManager implements ArticleManagerDAO {
                 break;
             }
         }
-        
+
         // Nur speichern, wenn Beitrag geändert wurde:
         if ($updated) {
             $this->saveArticle($articles);

From 7a3043f6444bb06ea8dd22521a01a748f0c88117 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 18:20:27 +0200
Subject: [PATCH 043/102] Update profile.php

---
 content/profile.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/profile.php b/content/profile.php
index 3d75472..ec059fd 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -78,7 +78,7 @@ include_once 'php/controller/profileArticles-controller.php';
                                     </div>
                                 </div>
                             <?php endif; ?>
-                            <a href="index.php?pfad=createArticle" class="edit-link-button">Bearbeiten</a>
+                            <a href="index.php?pfad=updateArticle&id=<?php echo $userArticle->getID(); ?>" class="edit-link-button">Bearbeiten</a>
                         </div>
                     <?php endforeach; ?>
 

From 222759a1bc7920bfec10fbad307db4c286d75780 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 18:21:46 +0200
Subject: [PATCH 044/102] Update updateArticle.php

---
 content/updateArticle.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 600f2a5..750437e 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -1,5 +1,6 @@
 <?php
 session_start();
+include_once 'php/controller/updateArticle-controller.php';
 ?>
 <!--
     Seite: Beitrag erstellen

From e096774233b487842c3c0411083ba41bad0692aa Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:29:24 +0100
Subject: [PATCH 045/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 26 +--------------------
 1 file changed, 1 insertion(+), 25 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 93e303b..b506d27 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -4,30 +4,6 @@ require_once '../model/LocalArticleManager.php';
 require_once '../model/ArticleManager.php';
 require_once '../model/Article.php';
 
-// Angaben aus übergebener ID setzen:
-if (isset($_GET["id"])){ // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
-    try {
-        $articleManager = ArticleManager::getInstance();
-        $article = $articleManager->getArticle($_GET["id"]);
-        if($article != null){
-            $title = $article->getTitle();
-            $content = $article->getContent();
-            $category = $article->getCategory();
-            $author = $article->getAuthor();
-            $tags = $article->getTags();
-        }else{
-            $_SESSION["message"] = "article_not_found";
-            echo "article_not_found";
-        }
-    } catch (Exception $e){
-        $_SESSION["message"] = "internal_error";
-        echo "Fehler aufgetreten: " . $e->getMessage();
-    }
-}else{
-    $_SESSION["message"] = "article_not_found";
-}
-
-// Wenn "speichern" gedrückt wurde:
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
     if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
@@ -42,7 +18,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         $newTags = $_POST["tags"];
 
         try {
-            $articleManager = ArticleManager::getInstance();
+            $articleManager = ArticleManager::getInstance(); // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
             $articleManager->updateArticle(new Article($newTitle, $newContent, $newCategory, $author, $newTags), $author);
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";

From 1a6403963af0acdbc43281ca5f91263d3d0dde4b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:29:26 +0100
Subject: [PATCH 046/102] Update updateArticle.php

---
 content/updateArticle.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 750437e..17cf7bb 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -1,6 +1,5 @@
 <?php
-session_start();
-include_once 'php/controller/updateArticle-controller.php';
+include_once 'php/controller/showArticle-controller.php';
 ?>
 <!--
     Seite: Beitrag erstellen

From 29e23a8d3ba5c4893caaa96e153ffa8d3b1b939e Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:32:57 +0100
Subject: [PATCH 047/102] Update updateArticle.php

---
 content/updateArticle.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 17cf7bb..4595eb3 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -34,7 +34,7 @@ include_once 'php/controller/showArticle-controller.php';
         <div class="sidebar-block">
             <label for="category">Kategorie <span class="required">*</span></label>
             <select id="category" name="category" required>
-                <option value="<?php if (isset($category) && !empty($category)){echo htmlspecialchars($category);} ?>" disabled selected>Kategorie wählen...</option>
+                <option disabled selected>Kategorie wählen...</option>
 
                 <optgroup label="Sprachen">
                     <option value="deutsch">Deutsch</option>

From 32cb8a9d9e0a446434889b9bacce2ff2ff55182f Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:36:29 +0100
Subject: [PATCH 048/102] updateArticle Anpassungen

---
 php/model/ArticleManagerDAO.php   | 3 ++-
 php/model/LocalArticleManager.php | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/php/model/ArticleManagerDAO.php b/php/model/ArticleManagerDAO.php
index ac5dc42..92bdfa0 100644
--- a/php/model/ArticleManagerDAO.php
+++ b/php/model/ArticleManagerDAO.php
@@ -24,13 +24,14 @@ interface ArticleManagerDAO
      * Ändert den gespeicherten Beitrag eines übergebenen Beitrags und eines Autors.
      * Es wird geprüft, ob der zu änderne Beitrag existiert und ob der übergebene Autor der Autor des originalen
      * Beitrages ist.
+     * @param $id
      * @param $article
      * @param $author
      * @return void
      *
      * TODO: Fehlerbeschreibung hinzufügen
      */
-    public function updateArticle($article, $author);
+    public function updateArticle($id, $article, $author);
 
     /**
      * Löscht einen Beitrag aus übergebener ID.
diff --git a/php/model/LocalArticleManager.php b/php/model/LocalArticleManager.php
index 5f18c32..ed37994 100644
--- a/php/model/LocalArticleManager.php
+++ b/php/model/LocalArticleManager.php
@@ -62,7 +62,7 @@ class LocalArticleManager implements ArticleManagerDAO {
         $this->saveArticle($articles);
     }
 
-    public function updateArticle($article, $author)
+    public function updateArticle($id, $article, $author)
     {
         if (empty($article)) {
             return;
@@ -79,9 +79,9 @@ class LocalArticleManager implements ArticleManagerDAO {
 
         // Beitrag aktualisieren:
         foreach ($articles as $index => $storedArticle) {
-            if (isset($storedArticle['id']) && $storedArticle['id'] == $article->getId()) {
+            if (isset($storedArticle['id']) && $storedArticle['id'] == $id) {
                 $articles[$index] = [
-                    "id" => $article->getId(),
+                    "id" => $id,
                     "title" => $article->getTitle(),
                     "content" => $article->getContent(),
                     "author" => $article->getAuthor(),

From c7853633846a9faa0ef4ef08413c07e49585f61d Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:40:56 +0100
Subject: [PATCH 049/102] missing_id

---
 content/updateArticle.php                   | 2 +-
 php/controller/showArticle-controller.php   | 1 +
 php/controller/updateArticle-controller.php | 4 +++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 4595eb3..3266217 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -8,7 +8,7 @@ include_once 'php/controller/showArticle-controller.php';
 <form method="post" action="php/controller/updateArticle-controller.php" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
-        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error" || $_SESSION["message"] == "missing_id"): ?>
             <p class="alert-message is-error">
                 Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
             </p>
diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index ea27a0c..c7c6357 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -5,6 +5,7 @@ require_once 'php/model/ArticleManager.php';
 
 if (isset($_GET["id"])){
     try {
+        $id = (int)$_GET["id"];
         $articleManager = ArticleManager::getInstance();
         $article = $articleManager->getArticle($_GET["id"]);
         if($article != null){
diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index b506d27..6df27d1 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -9,7 +9,9 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=updateArticle");
         exit();
-    } else {
+    } elseif(!isset($id)) {
+        $_SESSION["message"] = "missing_id";
+    }else{
 
         $newTitle = $_POST["title"];
         $newContent = $_POST["content"];

From 738b36c406f0bdf1e5ca28adef13c917ed656959 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:43:05 +0100
Subject: [PATCH 050/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 6df27d1..2ffb8b0 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -11,6 +11,8 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         exit();
     } elseif(!isset($id)) {
         $_SESSION["message"] = "missing_id";
+        header("location: ../../index.php?pfad=updateArticle");
+        exit();
     }else{
 
         $newTitle = $_POST["title"];

From b4ca25db3d975909f8fece041265fe2045d8aed0 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:44:30 +0100
Subject: [PATCH 051/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index c7c6357..0a368df 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -5,9 +5,9 @@ require_once 'php/model/ArticleManager.php';
 
 if (isset($_GET["id"])){
     try {
-        $id = (int)$_GET["id"];
+        $id = $_GET["id"];
         $articleManager = ArticleManager::getInstance();
-        $article = $articleManager->getArticle($_GET["id"]);
+        $article = $articleManager->getArticle($id);
         if($article != null){
             $title = $article->getTitle();
             $content = $article->getContent();

From 0a37dd4b8b7c9d5ac246c707ecea87b164504174 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:45:04 +0100
Subject: [PATCH 052/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 0a368df..5eaf999 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -20,7 +20,6 @@ if (isset($_GET["id"])){
         }
     } catch (Exception $e){
         $_SESSION["message"] = "internal_error";
-        echo "Fehler aufgetreten: " . $e->getMessage();
     }
 }else{
     $_SESSION["message"] = "article_not_found";

From d987ca271f1938bf7ff00eb6da17b61decd907fc Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:48:05 +0100
Subject: [PATCH 053/102] Update updateArticle.php

---
 content/updateArticle.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 3266217..8be7919 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,7 +5,7 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="php/controller/updateArticle-controller.php" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error" || $_SESSION["message"] == "missing_id"): ?>

From 2cd68873de0736094b769f7bd78014369c48c43d Mon Sep 17 00:00:00 2001
From: NOrtmann1 <145041949+NOrtmann1@users.noreply.github.com>
Date: Fri, 29 May 2026 17:50:11 +0100
Subject: [PATCH 054/102] Update updateArticle.php

---
 content/updateArticle.php | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 8be7919..f6b048e 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,14 +5,20 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="php/controller/updateArticle-controller.php" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
-        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error" || $_SESSION["message"] == "missing_id"): ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
             <p class="alert-message is-error">
                 Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
             </p>
         <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) &&  $_SESSION["message"] == "missing_id"): ?>
+            <p class="alert-message is-error">
+                Es ist ein Fehler aufgetreten. Die ID konnte nicht ausgelesen werden. Bitte versuche es erneut.
+            </p>
+        <?php endif; ?>
+
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
             <p class="alert-message is-error">
                 Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.

From 2a3e73d409ba7258bedb27af311a9af0e0a2d3c3 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:11:11 +0200
Subject: [PATCH 055/102] updateArticle

---
 php/controller/updateArticle-controller.php |  7 ++++-
 php/model/Article.php                       | 32 ++++++++++++++-------
 php/model/LocalArticleManager.php           | 12 +++++---
 3 files changed, 35 insertions(+), 16 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 2ffb8b0..d2bcff3 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -23,7 +23,12 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
 
         try {
             $articleManager = ArticleManager::getInstance(); // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
-            $articleManager->updateArticle(new Article($newTitle, $newContent, $newCategory, $author, $newTags), $author);
+            $article = $articleManager->getArticle($id);
+            $article->setTitle($newTitle);
+            $article->setContent($newContent);
+            $article->setCategory($newCategory);
+            $article->setTags($newTags);
+            $articleManager->updateArticle($id ,$article, $author);
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";
         }
diff --git a/php/model/Article.php b/php/model/Article.php
index ebb370e..9ffd701 100644
--- a/php/model/Article.php
+++ b/php/model/Article.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * Klasse: Artikel
- * Diese Klasse stellt alle Daten eines Artikels (Beitrag) bereit
+ * Diese Klasse stellt alle Daten eines Beitrags (Beitrag) bereit
  *
  * @author Niklas Ortmann
  */
@@ -38,7 +38,7 @@ class Article
     }
 
     /**
-     * Gibt die ID eines Artikels zurück.
+     * Gibt die ID eines Beitrags zurück.
      * @return int
      */
     public function getId(): int
@@ -47,7 +47,7 @@ class Article
     }
 
     /**
-     * Gibt den Titel eines Artikels zurück.
+     * Gibt den Titel eines Beitrags zurück.
      * @return string
      */
     public function getTitle(): string
@@ -56,7 +56,7 @@ class Article
     }
 
     /**
-     * Setzt den Titel eines Artikels
+     * Setzt den Titel eines Beitrags
      * @param $title
      * @return void
      */
@@ -66,7 +66,7 @@ class Article
     }
 
     /**
-     * Gibt den Content eines Artikels zurück.
+     * Gibt den Content eines Beitrags zurück.
      * TODO: Content muss noch definiert werden.
      * @return string
      */
@@ -76,7 +76,7 @@ class Article
     }
 
     /**
-     * Setzt den Content eines Artikels.
+     * Setzt den Content eines Beitrags.
      * TODO: Content muss noch definiert werden.
      * @param $content
      * @return void
@@ -87,7 +87,7 @@ class Article
     }
 
     /**
-     * Gibt den Autor eines Artikels zurück.
+     * Gibt den Autor eines Beitrags zurück.
      * @return string
      */
     public function getAuthor(): string
@@ -96,7 +96,7 @@ class Article
     }
 
     /**
-     * Gibt das Veröffentlichungsdatum des Artikels zurück.
+     * Gibt das Veröffentlichungsdatum des Beitrags zurück.
      * @return string
      */
     public function getCreationDate(): string
@@ -105,7 +105,7 @@ class Article
     }
 
     /**
-     * Gibt die Kategorie eines Artikels zurück.
+     * Gibt die Kategorie eines Beitrags zurück.
      * @return string
      */
     public function getCategory(): string
@@ -114,7 +114,17 @@ class Article
     }
 
     /**
-     * Gibt die Schlagworte eines Artikels zurück.
+     * Setzt die Kategorie eines Beitrags.
+     * @param string $category
+     * @return void
+     */
+    public function setCategory(string $category)
+    {
+        $this->category = $category;
+    }
+
+    /**
+     * Gibt die Schlagworte eines Beitrags zurück.
      * @return string
      */
     public function getTags(): string
@@ -123,7 +133,7 @@ class Article
     }
 
     /**
-     * Setzt die Schlagworte eines Artikels.
+     * Setzt die Schlagworte eines Beitrags.
      * @param string $tags
      */
     public function setTags(string $tags)
diff --git a/php/model/LocalArticleManager.php b/php/model/LocalArticleManager.php
index ed37994..7e795f0 100644
--- a/php/model/LocalArticleManager.php
+++ b/php/model/LocalArticleManager.php
@@ -65,32 +65,36 @@ class LocalArticleManager implements ArticleManagerDAO {
     public function updateArticle($id, $article, $author)
     {
         if (empty($article)) {
+            // TODO: Implement Exception.
             return;
         }
 
         // Berechtigungsprüfung:
         if ($article->getAuthor() !== $author) {
-            // TODO: Implement Exception (z.B. throw new Exception("Nicht autorisiert"));
+            // TODO: Implement Exception.
             return;
         }
 
+        // Beitrag aktualisieren:
         $articles = $this->getAllArticles();
         $updated = false;
 
-        // Beitrag aktualisieren:
         foreach ($articles as $index => $storedArticle) {
             if (isset($storedArticle['id']) && $storedArticle['id'] == $id) {
                 $articles[$index] = [
                     "id" => $id,
                     "title" => $article->getTitle(),
                     "content" => $article->getContent(),
-                    "author" => $article->getAuthor(),
+                    "author" => $author,
                     "category" => $article->getCategory(),
                     "tags" => $article->getTags(),
-                    "creationDate" => $article->getCreationDate() // Behält das originale Erstelldatum bei
+                    "creationDate" => $article->getCreationDate()
                 ];
                 $updated = true;
                 break;
+            }else{
+                // TODO: Implement Exception.
+                return;
             }
         }
 

From 6634bee77b2bb006d664092292962080fe34e61c Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:16:58 +0200
Subject: [PATCH 056/102] Update home.php

---
 content/home.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/content/home.php b/content/home.php
index 58e0993..ace9e78 100644
--- a/content/home.php
+++ b/content/home.php
@@ -17,6 +17,11 @@ include_once 'php/controller/home-controller.php';
         Dein Beitrag wurde erfolgreich veröffentlicht!
     </p>
     <?php endif; ?>
+    <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "article_updated"): ?>
+        <p class="alert-message is-success">
+            Dein Beitrag wurde erfolgreich bearbeitet!
+        </p>
+    <?php endif; ?>
     <?php
     unset($_SESSION["message"]);
     ?>

From 5b718f24eda77cb916205b7f3bfc960b4e022302 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:17:00 +0200
Subject: [PATCH 057/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index d2bcff3..f1b7a45 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -32,7 +32,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";
         }
-        $_SESSION["message"] = "new_article";
+        $_SESSION["message"] = "article_updated";
         // Weiterleitung zur Homepage
         header("location: ../../index.php");
         exit();

From d8c350c20f5435f5c7bc4fb9c73086d82094cec5 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:19:28 +0200
Subject: [PATCH 058/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 5eaf999..79b5e9e 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,6 @@ if (isset($_GET["id"])){
             $tags = $article->getTags();
         }else{
             $_SESSION["message"] = "article_not_found";
-            echo "article_not_found";
         }
     } catch (Exception $e){
         $_SESSION["message"] = "internal_error";

From 560f53cfb6f19a1ff0b370eac9efb1595c852d01 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:24:51 +0200
Subject: [PATCH 059/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index f1b7a45..19d2c2a 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -5,14 +5,17 @@ require_once '../model/ArticleManager.php';
 require_once '../model/Article.php';
 
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
-    if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
+    try {
+        $id = $_GET["id"];
+    } catch (Exception $e){
+        $_SESSION["message"] = "missing_id";
+    }
+    if (!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=updateArticle");
-        exit();
     } elseif(!isset($id)) {
         $_SESSION["message"] = "missing_id";
         header("location: ../../index.php?pfad=updateArticle");
-        exit();
     }else{
 
         $newTitle = $_POST["title"];
@@ -35,9 +38,9 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         $_SESSION["message"] = "article_updated";
         // Weiterleitung zur Homepage
         header("location: ../../index.php");
-        exit();
 
     }
+    exit();
 }
 
 ?>
\ No newline at end of file

From e575e3dfa87d3a32c83d57bf8f68ac49f919b481 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:25:22 +0200
Subject: [PATCH 060/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 19d2c2a..2f23258 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -15,7 +15,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         header("location: ../../index.php?pfad=updateArticle");
     } elseif(!isset($id)) {
         $_SESSION["message"] = "missing_id";
-        header("location: ../../index.php?pfad=updateArticle");
+        //header("location: ../../index.php?pfad=updateArticle");
     }else{
 
         $newTitle = $_POST["title"];

From c1ddbfdf48b783345a76e25386c35d7810d68e1b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:28:29 +0200
Subject: [PATCH 061/102] Update updateArticle.php

---
 content/updateArticle.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index f6b048e..a82436a 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,7 +5,7 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="php/controller/updateArticle-controller.php" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id){echo $id;}else{$_SESSION["message"] = "missing_id"; } ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>

From 365f70af98a3cc43fc2eda8a404e46b403f1da68 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:29:06 +0200
Subject: [PATCH 062/102] Update updateArticle.php

---
 content/updateArticle.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index a82436a..fb99314 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,7 +5,7 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id){echo $id;}else{$_SESSION["message"] = "missing_id"; } ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id)){echo $id;}else{$_SESSION["message"] = "missing_id"; } ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>

From f96415bfe69186bc5abf38910f0ab32c4662d5e7 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:36:23 +0200
Subject: [PATCH 063/102] Update showArticle.php

---
 content/showArticle.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/content/showArticle.php b/content/showArticle.php
index 968c0b2..796d207 100644
--- a/content/showArticle.php
+++ b/content/showArticle.php
@@ -9,6 +9,23 @@ include_once 'php/controller/showArticle-controller.php';
 
 <!-- Hauptcontainer für die Beitragsansicht (Ausschließlich der Content-Bereich) -->
 <main class="article-view-container">
+    <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
+        <p class="alert-message is-error">
+            Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+        </p>
+    <?php endif; ?>
+    <?php if (isset($_SESSION["message"]) &&  $_SESSION["message"] == "missing_id"): ?>
+        <p class="alert-message is-error">
+            Es ist ein Fehler aufgetreten. Die ID konnte nicht ausgelesen werden. Bitte versuche es erneut.
+        </p>
+    <?php endif; ?>
+
+    <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
+        <p class="alert-message is-error">
+            Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
+        </p>
+    <?php endif; ?>
+
     <!-- Metadaten & Titel -->
     <div class="article-view-top-section">
 

From 3cb63f791adbd50d8d07603d2226cafa37b3fdb1 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:36:28 +0200
Subject: [PATCH 064/102] Update updateArticle.php

---
 content/updateArticle.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index fb99314..464a3e3 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,7 +5,7 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id)){echo $id;}else{$_SESSION["message"] = "missing_id"; } ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id) && !empty($id)){echo htmlspecialchars($id);}else{$_SESSION["message"] = "missing_id";} ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>

From e86fef17661ab074deeb6a269dde43d0667d39ec Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:36:31 +0200
Subject: [PATCH 065/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 2f23258..fa5e232 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -37,7 +37,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         }
         $_SESSION["message"] = "article_updated";
         // Weiterleitung zur Homepage
-        header("location: ../../index.php");
+        header("location: ../../index.php?pfad=showArticle&id=$id");
 
     }
     exit();

From 71a8dd5f1796d21a46290b2371821f52baf709de Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 09:41:34 +0200
Subject: [PATCH 066/102] updateArticle funktioniert

---
 content/createArticle.php |  5 ++++-
 content/home.php          |  5 -----
 content/profile.php       |  8 ++++----
 content/showArticle.php   | 10 +++++++++-
 content/updateArticle.php |  6 ++++--
 5 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 8fa550d..381c85a 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -10,7 +10,7 @@ session_start();
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
         <p class="alert-message is-error">
-            Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+            Es ist ein interner Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
         </p>
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
@@ -18,6 +18,9 @@ session_start();
             Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
         </p>
         <?php endif; ?>
+        <?php
+        unset($_SESSION["message"]);
+        ?>
         <input type="text" id="title" name="title" placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag..."></textarea>
     </main>
diff --git a/content/home.php b/content/home.php
index ace9e78..58e0993 100644
--- a/content/home.php
+++ b/content/home.php
@@ -17,11 +17,6 @@ include_once 'php/controller/home-controller.php';
         Dein Beitrag wurde erfolgreich veröffentlicht!
     </p>
     <?php endif; ?>
-    <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "article_updated"): ?>
-        <p class="alert-message is-success">
-            Dein Beitrag wurde erfolgreich bearbeitet!
-        </p>
-    <?php endif; ?>
     <?php
     unset($_SESSION["message"]);
     ?>
diff --git a/content/profile.php b/content/profile.php
index ec059fd..d7f5aa1 100644
--- a/content/profile.php
+++ b/content/profile.php
@@ -45,10 +45,9 @@ include_once 'php/controller/profileArticles-controller.php';
             <div class="articles-list">
                 <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
                     <p class="alert-message is-error">
-                        Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+                        Es ist ein interner Fehler aufgetreten. Bitte versuche es erneut.
                     </p>
                 <?php elseif (isset($userArticles) && count($userArticles) > 0): ?>
-
                     <?php foreach ($userArticles as $userArticle): ?>
                         <!-- Ein einzelner Artikel-Eintrag -->
                         <div class="article-item">
@@ -57,7 +56,6 @@ include_once 'php/controller/profileArticles-controller.php';
                                 <span class="article-category"><?php echo htmlspecialchars($userArticle->getCategory()); ?></span>
                             </div>
                             <h3 class="article-title"><?php echo htmlspecialchars($userArticle->getTitle()); ?></h3>
-
                             <?php
                             $tags = $userArticle->getTags();
                             if (isset($tags) && !empty($tags)): ?>
@@ -81,13 +79,15 @@ include_once 'php/controller/profileArticles-controller.php';
                             <a href="index.php?pfad=updateArticle&id=<?php echo $userArticle->getID(); ?>" class="edit-link-button">Bearbeiten</a>
                         </div>
                     <?php endforeach; ?>
-
                 <?php else: ?>
                     <p>Du hast noch keine Beiträge erstellt.</p>
                     <button type="button" class="login-button" onclick="window.location.href='index.php?pfad=createArticle';">
                         Beitrag erstellen!
                     </button>
                 <?php endif; ?>
+                <?php
+                unset($_SESSION["message"]);
+                ?>
             </div>
         </div>
 
diff --git a/content/showArticle.php b/content/showArticle.php
index 796d207..77125dd 100644
--- a/content/showArticle.php
+++ b/content/showArticle.php
@@ -11,7 +11,7 @@ include_once 'php/controller/showArticle-controller.php';
 <main class="article-view-container">
     <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
         <p class="alert-message is-error">
-            Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+            Es ist ein interner Fehler aufgetreten. Bitte versuche es erneut.
         </p>
     <?php endif; ?>
     <?php if (isset($_SESSION["message"]) &&  $_SESSION["message"] == "missing_id"): ?>
@@ -25,6 +25,14 @@ include_once 'php/controller/showArticle-controller.php';
             Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
         </p>
     <?php endif; ?>
+    <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "article_updated"): ?>
+        <p class="alert-message is-success">
+            Dein Beitrag wurde erfolgreich bearbeitet!
+        </p>
+    <?php endif; ?>
+    <?php
+    unset($_SESSION["message"]);
+    ?>
 
     <!-- Metadaten & Titel -->
     <div class="article-view-top-section">
diff --git a/content/updateArticle.php b/content/updateArticle.php
index 464a3e3..06d345e 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -10,7 +10,7 @@ include_once 'php/controller/showArticle-controller.php';
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>
             <p class="alert-message is-error">
-                Es ist ein Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
+                Es ist ein interner Fehler beim Speichern aufgetreten. Bitte versuche es erneut.
             </p>
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) &&  $_SESSION["message"] == "missing_id"): ?>
@@ -18,12 +18,14 @@ include_once 'php/controller/showArticle-controller.php';
                 Es ist ein Fehler aufgetreten. Die ID konnte nicht ausgelesen werden. Bitte versuche es erneut.
             </p>
         <?php endif; ?>
-
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
             <p class="alert-message is-error">
                 Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
             </p>
         <?php endif; ?>
+        <?php
+        unset($_SESSION["message"]);
+        ?>
         <input type="text" id="title" name="title" value="<?php if (isset($title) && !empty($title)){echo htmlspecialchars($title);} ?>" placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
             <?php if (isset($content) && !empty($content)){echo htmlspecialchars($content);} ?>

From 6ce7f0ef225108dfbd4a89a423c9a435e9ff5d48 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:02:20 +0200
Subject: [PATCH 067/102] createArticle-Eingabevalidierung

---
 content/createArticle.php                   |  25 +++++
 php/controller/createArticle-controller.php | 110 +++++++++++++++++---
 2 files changed, 118 insertions(+), 17 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 381c85a..3e95141 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -18,6 +18,31 @@ session_start();
             Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
         </p>
         <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_title"): ?>
+            <p class="alert-message is-error">
+                Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_content"): ?>
+            <p class="alert-message is-error">
+                Der Text ist zu lang. Maximal 7.000 Zeichen erlaubt (ca. 1.000 Wörter).
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_category"): ?>
+            <p class="alert-message is-error">
+                Die ausgewählte Kategorie ist ungültig.
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_tags"): ?>
+            <p class="alert-message is-error">
+                Ungültige Schlagworte gefunden. Erlaubt sind nur Buchstaben, Zahlen, Leerzeichen und Bindestriche (2-20 Zeichen).
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "validation_missing"): ?>
+            <p class="alert-message is-error">
+                Bei der Validierung deiner Daten ist ein Fehler aufgetreten. Bitte versuche es erneut.
+            </p>
+        <?php endif; ?>
         <?php
         unset($_SESSION["message"]);
         ?>
diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 375d136..5896928 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -7,25 +7,101 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=createArticle");
-    } else {
-
-        $title = $_POST["title"];
-        $content = $_POST["content"];
-        $category = $_POST["category"];
-        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
-        $tags = $_POST["tags"];
-
-        try {
-            $articleManager = ArticleManager::getInstance();
-            $articleManager->addArticle($title, $content, $author, $category, $tags);
-        } catch (Exception $e){
-            $_SESSION["message"] = "internal_error";
-        }
-        $_SESSION["message"] = "new_article";
-        // Weiterleitung zur Homepage
-        header("location: ../../index.php");
         exit();
+    } else {
+        // ------------------------ Validierung des Authors: ----------------------------
+        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
+        $validatedAuthor = $author;
 
+        // --------------------- Eingabevalidierung des Titels: -------------------------
+        $title = $_POST["title"];
+        // Mit Regex prüfen:
+        $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u'; //Erlaubt: Buchstaben, Zahlen, Standardsatzzeichen; 5-120 Zeichen
+        if (preg_match($titlePattern, $title)) {
+            $validatedTitle = $title;
+        } else {
+            $_SESSION["message"] = "invalid_title";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+        if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
+            $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
+        }
+
+        // --------------------- Eingabeüberprüfung des Contents: -----------------------
+        $content = $_POST["content"];
+        $zeichenAnzahl = mb_strlen($content);
+        if ($zeichenAnzahl <= 7000) {
+            $validatedContent = $content;
+        }else{
+            $_SESSION["message"] = "invalid_content";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        // --------------------- -Eingabevalidierung der Kategorie: --------------------
+        $category = $_POST["category"];
+        $allowedCategories = [
+            'deutsch', 'englisch', 'franzoesisch', 'latein', 'literatur',
+            'mathe', 'biologie', 'chemie', 'physik', 'informatik', 'astronomie',
+            'geschichte', 'erdkunde', 'sozialkunde', 'wirtschaft', 'religion',
+            'ethik', 'philosophie', 'psychologie', 'kunst', 'musik', 'theater',
+            'technik', 'werken', 'hauswirtschaft', 'sport'
+        ];
+        if (!in_array($category, $allowedCategories, true)) {
+            $_SESSION["message"] = "invalid_category";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        // -------------------------- Eingabevalidierung der tags: ----------------------
+        if (isset($_POST['tags'])) {
+            $tags = trim($_POST['tags']);
+        } else {
+            $tags = '';
+        }
+        $validatedTags = [];
+        $rawTags = explode(',', $tags); // String mit Kommas in array...
+
+        foreach ($rawTags as $rawTag) {
+            // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
+            $tag = trim($rawTag);
+
+            // leere Elemente überspringen:
+            if ($tag === '') {
+                continue;
+            }
+
+            // Tag mit Regex prüfen:
+            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,20}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-20 Zeichen
+            if (preg_match($tagPattern, $tag)) {
+                $validatedTags[] = $tag;
+            } else {
+                $_SESSION["message"] = "invalid_tags";
+                header("location: ../../index.php?pfad=createArticle");
+                exit();
+            }
+        }
+        // Duplikate entfernen:
+        $validatedTags = array_unique($validatedTags);
+
+        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
+        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedCategory) || !isset($validatedTags)) {
+            $_SESSION["message"] = "validation_missing";
+        } else {
+            try {
+                $articleManager = ArticleManager::getInstance();
+                $articleManager->addArticle($validatedTitle, $validatedContent, $validatedAuthor, $validatedCategory, $validatedTags);
+            } catch (Exception $e){
+                $_SESSION["message"] = "internal_error";
+                header("location: ../../index.php?pfad=createArticle");
+                exit();
+            }
+            $_SESSION["message"] = "new_article";
+            // Weiterleitung zur Homepage
+            header("location: ../../index.php");
+            exit();
+        }
     }
 }
 

From 979378d142cfd4986ee7c10686cbfa326f25ccfe Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:06:33 +0200
Subject: [PATCH 068/102] Update createArticle-controller.php

---
 php/controller/createArticle-controller.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 5896928..d0a5b6a 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -84,6 +84,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         }
         // Duplikate entfernen:
         $validatedTags = array_unique($validatedTags);
+        $validatedTags = implode(',', $validatedTags);
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
         if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedCategory) || !isset($validatedTags)) {

From 59268dc1026e381dfc9e0c628a63d174cee3d6fe Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:14:59 +0200
Subject: [PATCH 069/102] Eingaben gehen bei Fehlermeldungen nicht verloren

---
 content/createArticle.php                   | 12 +++++++++---
 php/controller/createArticle-controller.php |  4 ++++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 3e95141..7697780 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -46,8 +46,12 @@ session_start();
         <?php
         unset($_SESSION["message"]);
         ?>
-        <input type="text" id="title" name="title" placeholder="Titel hier eingeben" required>
-        <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag..."></textarea>
+        <input type="text" id="title" name="title"
+               value="<?php if (isset($_SESSION['old_title'])){htmlspecialchars($_SESSION['old_title'] ?? '');} unset($_SESSION['old_title']); ?>"
+               placeholder="Titel hier eingeben" required>
+        <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
+            <?php if (isset($_SESSION['old_content'])){htmlspecialchars($_SESSION['old_content'] ?? '');} unset($_SESSION['old_content']); ?>
+        </textarea>
     </main>
 
     <!-- Seitenleiste -->
@@ -104,7 +108,9 @@ session_start();
 
         <div class="sidebar-block">
             <label for="tags">Schlagwörter</label>
-            <input type="text" id="tags" name="tags" placeholder="z.B. Technik, IT (mit Komma trennen)">
+            <input type="text" id="tags" name="tags"
+                   value="<?php if(isset($_SESSION['old_tags'])){htmlspecialchars($_SESSION['old_tags'] ?? '');} unset($_SESSION['old_tags']); ?>"
+                   placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 
     </aside>
diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index d0a5b6a..ad90d86 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -4,6 +4,10 @@ require_once '../model/LocalArticleManager.php';
 require_once '../model/ArticleManager.php';
 
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
+    $_SESSION["old_title"]    = $_POST["title"] ?? '';
+    $_SESSION["old_content"]  = $_POST["content"] ?? '';
+    $_SESSION["old_category"] = $_POST["category"] ?? '';
+    $_SESSION["old_tags"]     = $_POST["tags"] ?? '';
     if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=createArticle");

From 09795c30dd5e392b3fc77413c0d729f3d7dbc5cc Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:19:01 +0200
Subject: [PATCH 070/102] debugging

---
 php/controller/createArticle-controller.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index ad90d86..9533580 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -16,6 +16,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // ------------------------ Validierung des Authors: ----------------------------
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
         $validatedAuthor = $author;
+        echo "Autorvalidierung erfolgreich";
 
         // --------------------- Eingabevalidierung des Titels: -------------------------
         $title = $_POST["title"];
@@ -31,6 +32,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
             $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
         }
+        echo "Titelvalidierung erfolgreich";
 
         // --------------------- Eingabeüberprüfung des Contents: -----------------------
         $content = $_POST["content"];
@@ -42,6 +44,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
+        echo "Contentvalidierung erfolgreich";
 
         // --------------------- -Eingabevalidierung der Kategorie: --------------------
         $category = $_POST["category"];
@@ -57,6 +60,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
+        echo "Kategorievalidierung erfolgreich";
 
         // -------------------------- Eingabevalidierung der tags: ----------------------
         if (isset($_POST['tags'])) {
@@ -89,6 +93,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // Duplikate entfernen:
         $validatedTags = array_unique($validatedTags);
         $validatedTags = implode(',', $validatedTags);
+        echo "Tagvalidierung erfolgreich";
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
         if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedCategory) || !isset($validatedTags)) {
@@ -97,6 +102,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             try {
                 $articleManager = ArticleManager::getInstance();
                 $articleManager->addArticle($validatedTitle, $validatedContent, $validatedAuthor, $validatedCategory, $validatedTags);
+                echo "Speichern erfolgreich";
             } catch (Exception $e){
                 $_SESSION["message"] = "internal_error";
                 header("location: ../../index.php?pfad=createArticle");

From 6aa1cd9a6304b6f0aea1c33ebedc1904744c008b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:30:07 +0200
Subject: [PATCH 071/102] Update createArticle-controller.php

---
 php/controller/createArticle-controller.php | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 9533580..a4c0fa2 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -60,11 +60,12 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
+        $validatedCategory = $category;
         echo "Kategorievalidierung erfolgreich";
 
         // -------------------------- Eingabevalidierung der tags: ----------------------
         if (isset($_POST['tags'])) {
-            $tags = trim($_POST['tags']);
+            $tags = $_POST['tags'];
         } else {
             $tags = '';
         }
@@ -96,8 +97,10 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         echo "Tagvalidierung erfolgreich";
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
-        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedCategory) || !isset($validatedTags)) {
+        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedAuthor) || !isset($validatedCategory) || !isset($validatedTags)) {
             $_SESSION["message"] = "validation_missing";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
         } else {
             try {
                 $articleManager = ArticleManager::getInstance();

From d6249169c65ced736aaff6be9a45fc3e91d2f768 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:31:25 +0200
Subject: [PATCH 072/102] Update createArticle.php

---
 content/createArticle.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 7697780..9d2dadf 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -47,10 +47,10 @@ session_start();
         unset($_SESSION["message"]);
         ?>
         <input type="text" id="title" name="title"
-               value="<?php if (isset($_SESSION['old_title'])){htmlspecialchars($_SESSION['old_title'] ?? '');} unset($_SESSION['old_title']); ?>"
+               value="<?php if (isset($_SESSION['old_title'])){echo htmlspecialchars($_SESSION['old_title'] ?? '');} unset($_SESSION['old_title']); ?>"
                placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
-            <?php if (isset($_SESSION['old_content'])){htmlspecialchars($_SESSION['old_content'] ?? '');} unset($_SESSION['old_content']); ?>
+            <?php if (isset($_SESSION['old_content'])){echo htmlspecialchars($_SESSION['old_content'] ?? '');} unset($_SESSION['old_content']); ?>
         </textarea>
     </main>
 
@@ -109,7 +109,7 @@ session_start();
         <div class="sidebar-block">
             <label for="tags">Schlagwörter</label>
             <input type="text" id="tags" name="tags"
-                   value="<?php if(isset($_SESSION['old_tags'])){htmlspecialchars($_SESSION['old_tags'] ?? '');} unset($_SESSION['old_tags']); ?>"
+                   value="<?php if(isset($_SESSION['old_tags'])){ echo htmlspecialchars($_SESSION['old_tags'] ?? '');} unset($_SESSION['old_tags']); ?>"
                    placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 

From f12babf2b13bf9e0dba9291db615161ab7fd053b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:35:25 +0200
Subject: [PATCH 073/102] Update createArticle.php

---
 content/createArticle.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 9d2dadf..c52fb80 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -47,10 +47,10 @@ session_start();
         unset($_SESSION["message"]);
         ?>
         <input type="text" id="title" name="title"
-               value="<?php if (isset($_SESSION['old_title'])){echo htmlspecialchars($_SESSION['old_title'] ?? '');} unset($_SESSION['old_title']); ?>"
+               value="<?php echo htmlspecialchars($_SESSION['old_title'] ?? ''); unset($_SESSION['old_title']); ?>"
                placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
-            <?php if (isset($_SESSION['old_content'])){echo htmlspecialchars($_SESSION['old_content'] ?? '');} unset($_SESSION['old_content']); ?>
+            <?php echo htmlspecialchars($_SESSION['old_content'] ?? ''); unset($_SESSION['old_content']); ?>
         </textarea>
     </main>
 
@@ -109,7 +109,7 @@ session_start();
         <div class="sidebar-block">
             <label for="tags">Schlagwörter</label>
             <input type="text" id="tags" name="tags"
-                   value="<?php if(isset($_SESSION['old_tags'])){ echo htmlspecialchars($_SESSION['old_tags'] ?? '');} unset($_SESSION['old_tags']); ?>"
+                   value="<?php echo htmlspecialchars($_SESSION['old_tags'] ?? ''); unset($_SESSION['old_tags']); ?>"
                    placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 

From 829a0e49d820ffc85823fc98aa145242668299e4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:42:51 +0200
Subject: [PATCH 074/102] Content: zwischen 10 und 7000 Zeichen

---
 content/createArticle.php                   | 2 +-
 php/controller/createArticle-controller.php | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index c52fb80..970186c 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -25,7 +25,7 @@ session_start();
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_content"): ?>
             <p class="alert-message is-error">
-                Der Text ist zu lang. Maximal 7.000 Zeichen erlaubt (ca. 1.000 Wörter).
+                Der Text erlaubt eine Länge von 10 bis maximal 7.000 Zeichen (ca. 1.000 Wörter).
             </p>
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_category"): ?>
diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index a4c0fa2..10916fb 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -13,7 +13,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         header("location: ../../index.php?pfad=createArticle");
         exit();
     } else {
-        // ------------------------ Validierung des Authors: ----------------------------
+        // ------------------------ Validierung des Autors: ----------------------------
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
         $validatedAuthor = $author;
         echo "Autorvalidierung erfolgreich";
@@ -37,7 +37,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // --------------------- Eingabeüberprüfung des Contents: -----------------------
         $content = $_POST["content"];
         $zeichenAnzahl = mb_strlen($content);
-        if ($zeichenAnzahl <= 7000) {
+        if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
             $validatedContent = $content;
         }else{
             $_SESSION["message"] = "invalid_content";

From 754777d69e0dcf96c87f39b1b2d046029dd2b571 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:49:36 +0200
Subject: [PATCH 075/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 79b5e9e..38d69ee 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -15,12 +15,16 @@ if (isset($_GET["id"])){
             $author = $article->getAuthor();
             $tags = $article->getTags();
         }else{
-            $_SESSION["message"] = "article_not_found";
+            header("location: ../../index.php?pfad=404");
+            exit();
         }
     } catch (Exception $e){
         $_SESSION["message"] = "internal_error";
+        header("location: ../../index.php?pfad=showArticle");
+        exit();
     }
 }else{
-    $_SESSION["message"] = "article_not_found";
+    header("location: ../../index.php?pfad=404");
+    exit();
 }
 ?>
\ No newline at end of file

From 603c208ae4fe40dedd7a910fb670316648e5c13a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:50:59 +0200
Subject: [PATCH 076/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 38d69ee..f0ef716 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -24,7 +24,6 @@ if (isset($_GET["id"])){
         exit();
     }
 }else{
-    header("location: ../../index.php?pfad=404");
-    exit();
+    $_SESSION["message"] = "missing_id";
 }
 ?>
\ No newline at end of file

From 9f4ca058bdeb35e1820695fca3cfb0b18519ee02 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 11:52:16 +0200
Subject: [PATCH 077/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index f0ef716..c78bdbd 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -3,7 +3,7 @@ session_start();
 require_once 'php/model/Article.php';
 require_once 'php/model/ArticleManager.php';
 
-if (isset($_GET["id"])){
+if (isset($_GET["id"]) && !empty($_GET["id"])){
     try {
         $id = $_GET["id"];
         $articleManager = ArticleManager::getInstance();

From c5bfd02f09ed400dc860675e5417f34a56f46821 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:02:21 +0200
Subject: [PATCH 078/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index c78bdbd..b5ae40d 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -15,7 +15,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $author = $article->getAuthor();
             $tags = $article->getTags();
         }else{
-            header("location: ../../index.php?pfad=404");
+            header("location: ../index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From 76beb8d62e9892c323237ca3fa1291e871d36428 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:02:40 +0200
Subject: [PATCH 079/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index b5ae40d..46936b8 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -15,7 +15,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $author = $article->getAuthor();
             $tags = $article->getTags();
         }else{
-            header("location: ../index.php?pfad=404");
+            header("location: index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From ca337c4fac572fe8dc051eae1843aae9538b9ec4 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:03:22 +0200
Subject: [PATCH 080/102] debugging

---
 php/controller/showArticle-controller.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 46936b8..2e0e4ca 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -15,6 +15,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $author = $article->getAuthor();
             $tags = $article->getTags();
         }else{
+            echo "Test";
             header("location: index.php?pfad=404");
             exit();
         }

From 21793dffd7496d61883f6565804c6e8cfa9b4658 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:03:40 +0200
Subject: [PATCH 081/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 2e0e4ca..154da0b 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("location: index.php?pfad=404");
+            header("Location: index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From 7dc3c3b9882dcb3c226ecd3772308134917fa5f1 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:06:32 +0200
Subject: [PATCH 082/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 154da0b..3f88d42 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("Location: index.php?pfad=404");
+            header("location: ../../../index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From 80732354663181a1c25d18194e2119f32c584c0d Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:07:26 +0200
Subject: [PATCH 083/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 3f88d42..2e0e4ca 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("location: ../../../index.php?pfad=404");
+            header("location: index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From fdece531afbf5f30a207bd54789904a3b87dd8fc Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:09:44 +0200
Subject: [PATCH 084/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 2e0e4ca..53e7226 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("location: index.php?pfad=404");
+            header("location: /index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From a6210c9d6ece421efff6fcf27f55c4a3b1a8f44b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:13:03 +0200
Subject: [PATCH 085/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 53e7226..154da0b 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,7 +16,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("location: /index.php?pfad=404");
+            header("Location: index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){

From 62190fa8217388beec497c4de06618b7770db33a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:17:10 +0200
Subject: [PATCH 086/102] Update showArticle.php

---
 content/showArticle.php | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/content/showArticle.php b/content/showArticle.php
index 77125dd..4457dcc 100644
--- a/content/showArticle.php
+++ b/content/showArticle.php
@@ -1,12 +1,11 @@
+<?php
+include_once 'php/controller/showArticle-controller.php';
+?>
 <!--
     Seite: Anzeige für Beiträge
     Funktion: Stellt einen übergebenen Beitrag dar.
 -->
 
-<?php
-include_once 'php/controller/showArticle-controller.php';
-?>
-
 <!-- Hauptcontainer für die Beitragsansicht (Ausschließlich der Content-Bereich) -->
 <main class="article-view-container">
     <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>

From d18f33a87a21dd2e2aded2428046646159d890ed Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:17:11 +0200
Subject: [PATCH 087/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 154da0b..95d649d 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -16,12 +16,12 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $tags = $article->getTags();
         }else{
             echo "Test";
-            header("Location: index.php?pfad=404");
+            header("location: index.php?pfad=404");
             exit();
         }
     } catch (Exception $e){
         $_SESSION["message"] = "internal_error";
-        header("location: ../../index.php?pfad=showArticle");
+        header("location: index.php?pfad=showArticle");
         exit();
     }
 }else{

From 10b058afa03f6d98ef5c1d481fca01464f8319fe Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:22:14 +0200
Subject: [PATCH 088/102] Update path.php

---
 path.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/path.php b/path.php
index 61ea409..d1d0a18 100644
--- a/path.php
+++ b/path.php
@@ -1,3 +1,4 @@
 <?php
+// mit $_SERVER['DOCUMENT_ROOT'] später umbauen?
 $abs_path = __DIR__;
 ?>

From e105ab61b7c8bbaf9c1eee6b2eda6957d094929b Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:24:59 +0200
Subject: [PATCH 089/102] Update showArticle-controller.php

---
 php/controller/showArticle-controller.php | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 95d649d..38bb3f2 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -15,13 +15,12 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
             $author = $article->getAuthor();
             $tags = $article->getTags();
         }else{
-            echo "Test";
-            header("location: index.php?pfad=404");
+            //header("location: index.php?pfad=404");
+            include_once "content/404.php";
             exit();
         }
     } catch (Exception $e){
         $_SESSION["message"] = "internal_error";
-        header("location: index.php?pfad=showArticle");
         exit();
     }
 }else{

From c440c25e4175a3d52138d44b81d4692a828d316e Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:30:50 +0200
Subject: [PATCH 090/102] Update updateArticle.php

---
 content/updateArticle.php | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 06d345e..01d5108 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -23,6 +23,31 @@ include_once 'php/controller/showArticle-controller.php';
                 Jeder Beitrag muss einen Titel, Kategorie und Inhalt besitzen.
             </p>
         <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_title"): ?>
+            <p class="alert-message is-error">
+                Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_content"): ?>
+            <p class="alert-message is-error">
+                Der Text erlaubt eine Länge von 10 bis maximal 7.000 Zeichen (ca. 1.000 Wörter).
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_category"): ?>
+            <p class="alert-message is-error">
+                Die ausgewählte Kategorie ist ungültig.
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_tags"): ?>
+            <p class="alert-message is-error">
+                Ungültige Schlagworte gefunden. Erlaubt sind nur Buchstaben, Zahlen, Leerzeichen und Bindestriche (2-20 Zeichen).
+            </p>
+        <?php endif; ?>
+        <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "validation_missing"): ?>
+            <p class="alert-message is-error">
+                Bei der Validierung deiner Daten ist ein Fehler aufgetreten. Bitte versuche es erneut.
+            </p>
+        <?php endif; ?>
         <?php
         unset($_SESSION["message"]);
         ?>

From cd38af22dbcfbf6c9efde2773aac53e0dc4d0607 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:33:13 +0200
Subject: [PATCH 091/102] Update updateArticle.php

---
 content/updateArticle.php | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 01d5108..67be89e 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -51,9 +51,20 @@ include_once 'php/controller/showArticle-controller.php';
         <?php
         unset($_SESSION["message"]);
         ?>
-        <input type="text" id="title" name="title" value="<?php if (isset($title) && !empty($title)){echo htmlspecialchars($title);} ?>" placeholder="Titel hier eingeben" required>
+        <input type="text" id="title" name="title"
+               value="<?php
+               if (isset($title) && !empty($title)){echo htmlspecialchars($title);}
+
+               echo htmlspecialchars($_SESSION['old_title'] ?? '');
+               unset($_SESSION['old_title']);
+               ?>"
+               placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
-            <?php if (isset($content) && !empty($content)){echo htmlspecialchars($content);} ?>
+            <?php
+            if (isset($content) && !empty($content)){echo htmlspecialchars($content);}
+
+            echo htmlspecialchars($_SESSION['old_content'] ?? ''); unset($_SESSION['old_content']);
+            ?>
         </textarea>
     </main>
 
@@ -111,7 +122,13 @@ include_once 'php/controller/showArticle-controller.php';
 
         <div class="sidebar-block">
             <label for="tags">Schlagwörter</label>
-            <input type="text" id="tags" name="tags" value="<?php if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);} ?>" placeholder="z.B. Technik, IT (mit Komma trennen)">
+            <input type="text" id="tags" name="tags"
+                   value="<?php
+                   if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);}
+
+                   echo htmlspecialchars($_SESSION['old_tags'] ?? ''); unset($_SESSION['old_tags']); ?>
+                   ?>"
+                   placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 
     </aside>

From c96d93c2ceebaa1a18f21593e4f59415b304544a Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:42:00 +0200
Subject: [PATCH 092/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 120 +++++++++++++++++---
 1 file changed, 104 insertions(+), 16 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index fa5e232..6d1b875 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -5,6 +5,10 @@ require_once '../model/ArticleManager.php';
 require_once '../model/Article.php';
 
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
+    $_SESSION["old_title"]    = $_POST["title"] ?? '';
+    $_SESSION["old_content"]  = $_POST["content"] ?? '';
+    $_SESSION["old_category"] = $_POST["category"] ?? '';
+    $_SESSION["old_tags"]     = $_POST["tags"] ?? '';
     try {
         $id = $_GET["id"];
     } catch (Exception $e){
@@ -12,28 +16,112 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     }
     if (!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
-        header("location: ../../index.php?pfad=updateArticle");
     } elseif(!isset($id)) {
         $_SESSION["message"] = "missing_id";
-        //header("location: ../../index.php?pfad=updateArticle");
     }else{
 
-        $newTitle = $_POST["title"];
-        $newContent = $_POST["content"];
-        $newCategory = $_POST["category"];
+        // ------------------------ Validierung des Autors: ----------------------------
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
-        $newTags = $_POST["tags"];
+        $validatedAuthor = $author;
+        echo "Autorvalidierung erfolgreich";
 
-        try {
-            $articleManager = ArticleManager::getInstance(); // TODO: Später aus Session den Nutzer auslesen und Autorenrechte prüfen!
-            $article = $articleManager->getArticle($id);
-            $article->setTitle($newTitle);
-            $article->setContent($newContent);
-            $article->setCategory($newCategory);
-            $article->setTags($newTags);
-            $articleManager->updateArticle($id ,$article, $author);
-        } catch (Exception $e){
-            $_SESSION["message"] = "internal_error";
+        // --------------------- Eingabevalidierung des Titels: -------------------------
+        $title = $_POST["title"];
+        // Mit Regex prüfen:
+        $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u'; //Erlaubt: Buchstaben, Zahlen, Standardsatzzeichen; 5-120 Zeichen
+        if (preg_match($titlePattern, $title)) {
+            $validatedTitle = $title;
+        } else {
+            $_SESSION["message"] = "invalid_title";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+        if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
+            $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
+        }
+        echo "Titelvalidierung erfolgreich";
+
+        // --------------------- Eingabeüberprüfung des Contents: -----------------------
+        $content = $_POST["content"];
+        $zeichenAnzahl = mb_strlen($content);
+        if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
+            $validatedContent = $content;
+        }else{
+            $_SESSION["message"] = "invalid_content";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+        echo "Contentvalidierung erfolgreich";
+
+        // --------------------- -Eingabevalidierung der Kategorie: --------------------
+        $category = $_POST["category"];
+        $allowedCategories = [
+            'deutsch', 'englisch', 'franzoesisch', 'latein', 'literatur',
+            'mathe', 'biologie', 'chemie', 'physik', 'informatik', 'astronomie',
+            'geschichte', 'erdkunde', 'sozialkunde', 'wirtschaft', 'religion',
+            'ethik', 'philosophie', 'psychologie', 'kunst', 'musik', 'theater',
+            'technik', 'werken', 'hauswirtschaft', 'sport'
+        ];
+        if (!in_array($category, $allowedCategories, true)) {
+            $_SESSION["message"] = "invalid_category";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+        $validatedCategory = $category;
+        echo "Kategorievalidierung erfolgreich";
+
+        // -------------------------- Eingabevalidierung der tags: ----------------------
+        if (isset($_POST['tags'])) {
+            $tags = $_POST['tags'];
+        } else {
+            $tags = '';
+        }
+        $validatedTags = [];
+        $rawTags = explode(',', $tags); // String mit Kommas in array...
+
+        foreach ($rawTags as $rawTag) {
+            // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
+            $tag = trim($rawTag);
+
+            // leere Elemente überspringen:
+            if ($tag === '') {
+                continue;
+            }
+
+            // Tag mit Regex prüfen:
+            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,20}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-20 Zeichen
+            if (preg_match($tagPattern, $tag)) {
+                $validatedTags[] = $tag;
+            } else {
+                $_SESSION["message"] = "invalid_tags";
+                header("location: ../../index.php?pfad=createArticle");
+                exit();
+            }
+        }
+        // Duplikate entfernen:
+        $validatedTags = array_unique($validatedTags);
+        $validatedTags = implode(',', $validatedTags);
+        echo "Tagvalidierung erfolgreich";
+
+        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
+        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedAuthor) || !isset($validatedCategory) || !isset($validatedTags)) {
+            $_SESSION["message"] = "validation_missing";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        } else {
+            try {
+                $articleManager = ArticleManager::getInstance();
+                $article = $articleManager->getArticle($id);
+                $article->setTitle($validatedTitle);
+                $article->setContent($validatedContent);
+                $article->setCategory($validatedCategory);
+                $article->setTags($validatedTags);
+                $articleManager->updateArticle($id ,$article, $validatedAuthor);
+            } catch (Exception $e){
+                $_SESSION["message"] = "internal_error";
+                header("location: ../../index.php?pfad=createArticle");
+                exit();
+            }
         }
         $_SESSION["message"] = "article_updated";
         // Weiterleitung zur Homepage

From 1ca27bc072ebf671d8ba22548fb2845ff76cda42 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:43:11 +0200
Subject: [PATCH 093/102] Update updateArticle.php

---
 content/updateArticle.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 67be89e..49c0254 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -126,8 +126,7 @@ include_once 'php/controller/showArticle-controller.php';
                    value="<?php
                    if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);}
 
-                   echo htmlspecialchars($_SESSION['old_tags'] ?? ''); unset($_SESSION['old_tags']); ?>
-                   ?>"
+                   echo htmlspecialchars($_SESSION['old_tags'] ?? ''); unset($_SESSION['old_tags']); ?>"
                    placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 

From a24914126f33044e21cf57c4f89272cf71d3d6d1 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:46:51 +0200
Subject: [PATCH 094/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 6d1b875..999ae76 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -23,7 +23,6 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // ------------------------ Validierung des Autors: ----------------------------
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
         $validatedAuthor = $author;
-        echo "Autorvalidierung erfolgreich";
 
         // --------------------- Eingabevalidierung des Titels: -------------------------
         $title = $_POST["title"];
@@ -39,7 +38,6 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
             $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
         }
-        echo "Titelvalidierung erfolgreich";
 
         // --------------------- Eingabeüberprüfung des Contents: -----------------------
         $content = $_POST["content"];
@@ -51,7 +49,6 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
-        echo "Contentvalidierung erfolgreich";
 
         // --------------------- -Eingabevalidierung der Kategorie: --------------------
         $category = $_POST["category"];
@@ -68,7 +65,6 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             exit();
         }
         $validatedCategory = $category;
-        echo "Kategorievalidierung erfolgreich";
 
         // -------------------------- Eingabevalidierung der tags: ----------------------
         if (isset($_POST['tags'])) {
@@ -101,7 +97,6 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // Duplikate entfernen:
         $validatedTags = array_unique($validatedTags);
         $validatedTags = implode(',', $validatedTags);
-        echo "Tagvalidierung erfolgreich";
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
         if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedAuthor) || !isset($validatedCategory) || !isset($validatedTags)) {

From 268fe6a6b96a499822a1640d7011bd80ba20cbbe Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:49:45 +0200
Subject: [PATCH 095/102] Update updateArticle.php

---
 content/updateArticle.php | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/content/updateArticle.php b/content/updateArticle.php
index 49c0254..ac86814 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -53,17 +53,21 @@ include_once 'php/controller/showArticle-controller.php';
         ?>
         <input type="text" id="title" name="title"
                value="<?php
-               if (isset($title) && !empty($title)){echo htmlspecialchars($title);}
+               if (isset($title) && !empty($title)){echo htmlspecialchars($title);
+               }elseif (isset($_SESSION['old_title']) && !empty($_SESSION['old_title'])){
+                   echo htmlspecialchars($_SESSION['old_title']);
+                   unset($_SESSION['old_title']);
+               }
 
-               echo htmlspecialchars($_SESSION['old_title'] ?? '');
-               unset($_SESSION['old_title']);
                ?>"
                placeholder="Titel hier eingeben" required>
         <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag...">
             <?php
-            if (isset($content) && !empty($content)){echo htmlspecialchars($content);}
-
-            echo htmlspecialchars($_SESSION['old_content'] ?? ''); unset($_SESSION['old_content']);
+            if (isset($content) && !empty($content)){echo htmlspecialchars($content);
+            }elseif (isset($_SESSION['old_content']) && !empty($_SESSION['old_content'])){
+                echo htmlspecialchars($_SESSION['old_content']);
+                unset($_SESSION['old_content']);
+            }
             ?>
         </textarea>
     </main>
@@ -124,9 +128,12 @@ include_once 'php/controller/showArticle-controller.php';
             <label for="tags">Schlagwörter</label>
             <input type="text" id="tags" name="tags"
                    value="<?php
-                   if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);}
-
-                   echo htmlspecialchars($_SESSION['old_tags'] ?? ''); unset($_SESSION['old_tags']); ?>"
+                   if (isset($tags) && !empty($tags)){echo htmlspecialchars($tags);
+                   } elseif (isset($_SESSION['old_tags']) && !empty($_SESSION['old_tags'])){
+                       echo htmlspecialchars($_SESSION['old_tags']);
+                       unset($_SESSION['old_tags']);
+                   }
+                   ?>"
                    placeholder="z.B. Technik, IT (mit Komma trennen)">
         </div>
 

From 308e5af6ff507a6698bdb56945f71bb35f561a78 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 12:51:17 +0200
Subject: [PATCH 096/102] tags-> bis 50 Zeichen

---
 content/createArticle.php                   | 2 +-
 php/controller/createArticle-controller.php | 2 +-
 php/controller/updateArticle-controller.php | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/content/createArticle.php b/content/createArticle.php
index 970186c..41f1ca8 100644
--- a/content/createArticle.php
+++ b/content/createArticle.php
@@ -35,7 +35,7 @@ session_start();
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "invalid_tags"): ?>
             <p class="alert-message is-error">
-                Ungültige Schlagworte gefunden. Erlaubt sind nur Buchstaben, Zahlen, Leerzeichen und Bindestriche (2-20 Zeichen).
+                Ungültige Schlagworte gefunden. Erlaubt sind nur Buchstaben, Zahlen, Leerzeichen und Bindestriche (2-50 Zeichen).
             </p>
         <?php endif; ?>
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "validation_missing"): ?>
diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 10916fb..77e71ea 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -82,7 +82,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             }
 
             // Tag mit Regex prüfen:
-            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,20}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-20 Zeichen
+            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,50}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-50 Zeichen
             if (preg_match($tagPattern, $tag)) {
                 $validatedTags[] = $tag;
             } else {
diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 999ae76..807a45d 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -85,7 +85,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             }
 
             // Tag mit Regex prüfen:
-            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,20}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-20 Zeichen
+            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,50}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-50 Zeichen
             if (preg_match($tagPattern, $tag)) {
                 $validatedTags[] = $tag;
             } else {

From d5f30176c4ed71bbc863b60de8c78e5a10691822 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 13:41:22 +0200
Subject: [PATCH 097/102] article-validator.php

---
 php/controller/updateArticle-controller.php | 135 ++++++++------------
 php/validator/article-validator.php         | 104 +++++++++++++++
 2 files changed, 154 insertions(+), 85 deletions(-)
 create mode 100644 php/validator/article-validator.php

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 807a45d..086de7e 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -3,6 +3,7 @@ session_start();
 require_once '../model/LocalArticleManager.php';
 require_once '../model/ArticleManager.php';
 require_once '../model/Article.php';
+require_once '../validator/article-validator.php';
 
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
     $_SESSION["old_title"]    = $_POST["title"] ?? '';
@@ -19,111 +20,75 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     } elseif(!isset($id)) {
         $_SESSION["message"] = "missing_id";
     }else{
-
-        // ------------------------ Validierung des Autors: ----------------------------
-        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
-        $validatedAuthor = $author;
-
-        // --------------------- Eingabevalidierung des Titels: -------------------------
         $title = $_POST["title"];
-        // Mit Regex prüfen:
-        $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u'; //Erlaubt: Buchstaben, Zahlen, Standardsatzzeichen; 5-120 Zeichen
-        if (preg_match($titlePattern, $title)) {
-            $validatedTitle = $title;
-        } else {
-            $_SESSION["message"] = "invalid_title";
-            header("location: ../../index.php?pfad=createArticle");
-            exit();
-        }
-        if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
-            $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
-        }
-
-        // --------------------- Eingabeüberprüfung des Contents: -----------------------
         $content = $_POST["content"];
-        $zeichenAnzahl = mb_strlen($content);
-        if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
-            $validatedContent = $content;
-        }else{
-            $_SESSION["message"] = "invalid_content";
-            header("location: ../../index.php?pfad=createArticle");
-            exit();
-        }
-
-        // --------------------- -Eingabevalidierung der Kategorie: --------------------
+        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
         $category = $_POST["category"];
-        $allowedCategories = [
-            'deutsch', 'englisch', 'franzoesisch', 'latein', 'literatur',
-            'mathe', 'biologie', 'chemie', 'physik', 'informatik', 'astronomie',
-            'geschichte', 'erdkunde', 'sozialkunde', 'wirtschaft', 'religion',
-            'ethik', 'philosophie', 'psychologie', 'kunst', 'musik', 'theater',
-            'technik', 'werken', 'hauswirtschaft', 'sport'
-        ];
-        if (!in_array($category, $allowedCategories, true)) {
-            $_SESSION["message"] = "invalid_category";
-            header("location: ../../index.php?pfad=createArticle");
-            exit();
-        }
-        $validatedCategory = $category;
-
-        // -------------------------- Eingabevalidierung der tags: ----------------------
         if (isset($_POST['tags'])) {
             $tags = $_POST['tags'];
         } else {
             $tags = '';
         }
-        $validatedTags = [];
-        $rawTags = explode(',', $tags); // String mit Kommas in array...
 
-        foreach ($rawTags as $rawTag) {
-            // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
-            $tag = trim($rawTag);
-
-            // leere Elemente überspringen:
-            if ($tag === '') {
-                continue;
-            }
-
-            // Tag mit Regex prüfen:
-            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,50}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-50 Zeichen
-            if (preg_match($tagPattern, $tag)) {
-                $validatedTags[] = $tag;
-            } else {
-                $_SESSION["message"] = "invalid_tags";
-                header("location: ../../index.php?pfad=createArticle");
-                exit();
-            }
+        // -------------------------------- Validierung der Daten: -------------------------
+        if (!articleAuthorValidator($author)) {
+            $_SESSION["message"] = "author_not_valid";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
         }
-        // Duplikate entfernen:
-        $validatedTags = array_unique($validatedTags);
-        $validatedTags = implode(',', $validatedTags);
 
-        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
-        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedAuthor) || !isset($validatedCategory) || !isset($validatedTags)) {
-            $_SESSION["message"] = "validation_missing";
+        if (!articleTitleValidator($title)) {
+            $_SESSION["message"] = "invalid_title";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        if (!articleContentValidator($content)) {
+            $_SESSION["message"] = "invalid_content";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        if (!articleCategoryValidator($category)) {
+            $_SESSION["message"] = "invalid_category";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        if (!articleTagValidator($_POST["tags"])) {
+            $_SESSION["message"] = "invalid_tags";
             header("location: ../../index.php?pfad=createArticle");
             exit();
         } else {
-            try {
-                $articleManager = ArticleManager::getInstance();
-                $article = $articleManager->getArticle($id);
-                $article->setTitle($validatedTitle);
-                $article->setContent($validatedContent);
-                $article->setCategory($validatedCategory);
-                $article->setTags($validatedTags);
-                $articleManager->updateArticle($id ,$article, $validatedAuthor);
-            } catch (Exception $e){
-                $_SESSION["message"] = "internal_error";
-                header("location: ../../index.php?pfad=createArticle");
-                exit();
+            $cleanedTags = [];
+            $rawTags = explode(',', $tags);
+            foreach ($rawTags as $rawTag) {
+                // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
+                $tag = trim($rawTag);
+                // Duplikate entfernen:
+                $cleanedTags = array_unique($cleanedTags);
+                $cleanedTags = implode(',', $cleanedTags);
             }
         }
+
+        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
+        try {
+            $articleManager = ArticleManager::getInstance();
+            $article = $articleManager->getArticle($id);
+            $article->setTitle($title);
+            $article->setContent($content);
+            $article->setCategory($category);
+            $article->setTags($cleanedTags);
+            $articleManager->updateArticle($id ,$article, $author);
+        } catch (Exception $e){
+            $_SESSION["message"] = "internal_error";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
         $_SESSION["message"] = "article_updated";
         // Weiterleitung zur Homepage
         header("location: ../../index.php?pfad=showArticle&id=$id");
-
     }
-    exit();
 }
 
 ?>
\ No newline at end of file
diff --git a/php/validator/article-validator.php b/php/validator/article-validator.php
new file mode 100644
index 0000000..2eb1dbc
--- /dev/null
+++ b/php/validator/article-validator.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * Prüft, ob der Autor auch der Eigentümer des Beitrags ist.
+ * @param $author
+ * @return true
+ */
+function articleAuthorValidator($author)
+{
+    return true;
+}
+
+/**
+ * Prüft, ob der Titel die folgenden Bedingungen erfüllt:
+ * Buchstaben von a-z; A-Z
+ * Zahlen von 0-9
+ * Umlaute äöüÄÖÜß
+ * Satzeichen .,!?:;()"„“«»_+-
+ * 5-120 Zeichen
+ * @param $title
+ * @return bool
+ */
+function articleTitleValidator($title)
+{
+    $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u';
+    if (preg_match($titlePattern, $title)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/**
+ * Prüft, ob der Contenttext 10-7000 Zeichen enthält.
+ * @param $content
+ * @return bool
+ */
+function articleContentValidator($content)
+{
+    $zeichenAnzahl = mb_strlen($content);
+    if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
+        return true;
+    }else{
+        return false;
+    }
+}
+
+/**
+ * Prüft, ob die Kategorie eine erlaubt Kategorie ist.
+ * @param $category
+ * @return bool
+ */
+function articleCategoryValidator($category)
+{
+    $allowedCategories = [
+        'deutsch', 'englisch', 'franzoesisch', 'latein', 'literatur',
+        'mathe', 'biologie', 'chemie', 'physik', 'informatik', 'astronomie',
+        'geschichte', 'erdkunde', 'sozialkunde', 'wirtschaft', 'religion',
+        'ethik', 'philosophie', 'psychologie', 'kunst', 'musik', 'theater',
+        'technik', 'werken', 'hauswirtschaft', 'sport'
+    ];
+    if (in_array($category, $allowedCategories, true)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/**
+ * Prüft, ob die Tags die folgenden Bedingungen erfüllen:
+ * Buchstaben von a-z; A-Z
+ * Zahlen von 0-9
+ * Umlaute äöüÄÖÜß
+ * Satzeichen -
+ * 2-50 Zeichen
+ * @param $tags
+ * @return bool
+ */
+function articleTagValidator($tags)
+{
+    if (!isset($tags)) {
+        $tags = '';
+    }
+
+    $rawTags = explode(',', $tags);
+
+    foreach ($rawTags as $rawTag) {
+        // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
+        $tag = trim($rawTag);
+
+        // leere Elemente überspringen:
+        if ($tag === '') {
+            continue;
+        }
+
+        // Tag mit Regex prüfen:
+        $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,50}$/u';
+        if (!preg_match($tagPattern, $tag)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+?>
\ No newline at end of file

From 3df526d5b5a5fb381950f45e5be4b6c253388a07 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 13:54:02 +0200
Subject: [PATCH 098/102] Update article-validator.php

---
 php/validator/article-validator.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/php/validator/article-validator.php b/php/validator/article-validator.php
index 2eb1dbc..02c4f94 100644
--- a/php/validator/article-validator.php
+++ b/php/validator/article-validator.php
@@ -3,6 +3,7 @@
  * Prüft, ob der Autor auch der Eigentümer des Beitrags ist.
  * @param $author
  * @return true
+ * TODO: Implement this.
  */
 function articleAuthorValidator($author)
 {
@@ -21,6 +22,7 @@ function articleAuthorValidator($author)
  */
 function articleTitleValidator($title)
 {
+    $title = trim($title);
     $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u';
     if (preg_match($titlePattern, $title)) {
         return true;
@@ -36,8 +38,9 @@ function articleTitleValidator($title)
  */
 function articleContentValidator($content)
 {
+    $content = trim($content);
     $zeichenAnzahl = mb_strlen($content);
-    if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
+    if ($zeichenAnzahl <= 7000 && $zeichenAnzahl >= 10) {
         return true;
     }else{
         return false;

From 17345345b5625228ec6361ec315105c2da9b72db Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 13:54:04 +0200
Subject: [PATCH 099/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 33 ++++++++++++---------
 1 file changed, 19 insertions(+), 14 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 086de7e..3a40f5c 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -10,15 +10,19 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     $_SESSION["old_content"]  = $_POST["content"] ?? '';
     $_SESSION["old_category"] = $_POST["category"] ?? '';
     $_SESSION["old_tags"]     = $_POST["tags"] ?? '';
-    try {
+
+    if (isset($_GET["id"]) && !empty($_GET["id"])) {
         $id = $_GET["id"];
-    } catch (Exception $e){
+    } else {
         $_SESSION["message"] = "missing_id";
+        header("location: ../../index.php?pfad=updateArticle");
+        exit();
     }
+
     if (!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
-    } elseif(!isset($id)) {
-        $_SESSION["message"] = "missing_id";
+        header("location: ../../index.php?pfad=updateArticle");
+        exit();
     }else{
         $title = $_POST["title"];
         $content = $_POST["content"];
@@ -33,31 +37,31 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // -------------------------------- Validierung der Daten: -------------------------
         if (!articleAuthorValidator($author)) {
             $_SESSION["message"] = "author_not_valid";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleTitleValidator($title)) {
             $_SESSION["message"] = "invalid_title";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleContentValidator($content)) {
             $_SESSION["message"] = "invalid_content";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleCategoryValidator($category)) {
             $_SESSION["message"] = "invalid_category";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
-        if (!articleTagValidator($_POST["tags"])) {
+        if (!articleTagValidator($tags)) {
             $_SESSION["message"] = "invalid_tags";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         } else {
             $cleanedTags = [];
@@ -65,10 +69,11 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             foreach ($rawTags as $rawTag) {
                 // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
                 $tag = trim($rawTag);
-                // Duplikate entfernen:
-                $cleanedTags = array_unique($cleanedTags);
-                $cleanedTags = implode(',', $cleanedTags);
+                $cleanedTags[] = $tag;
             }
+            // Duplikate entfernen:
+            $cleanedTags = array_unique($cleanedTags);
+            $cleanedTags = implode(',', $cleanedTags);
         }
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
@@ -82,7 +87,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             $articleManager->updateArticle($id ,$article, $author);
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
         $_SESSION["message"] = "article_updated";

From e779162ec256fe9248f00671b113406e8a6944f5 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 13:57:53 +0200
Subject: [PATCH 100/102] Update createArticle-controller.php

---
 php/controller/createArticle-controller.php | 124 +++++++-------------
 1 file changed, 43 insertions(+), 81 deletions(-)

diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 77e71ea..0270a00 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -13,109 +13,71 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         header("location: ../../index.php?pfad=createArticle");
         exit();
     } else {
-        // ------------------------ Validierung des Autors: ----------------------------
-        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
-        $validatedAuthor = $author;
-        echo "Autorvalidierung erfolgreich";
-
-        // --------------------- Eingabevalidierung des Titels: -------------------------
         $title = $_POST["title"];
-        // Mit Regex prüfen:
-        $titlePattern = '/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u'; //Erlaubt: Buchstaben, Zahlen, Standardsatzzeichen; 5-120 Zeichen
-        if (preg_match($titlePattern, $title)) {
-            $validatedTitle = $title;
-        } else {
+        $content = $_POST["content"];
+        $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
+        $category = $_POST["category"];
+        $tags = $_POST['tags'] ?? '';
+
+        // -------------------------------- Validierung der Daten: -------------------------
+        if (!articleAuthorValidator($author)) {
+            $_SESSION["message"] = "author_not_valid";
+            header("location: ../../index.php?pfad=createArticle");
+            exit();
+        }
+
+        if (!articleTitleValidator($title)) {
             $_SESSION["message"] = "invalid_title";
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
-        if (!preg_match('/^[a-zA-Z0-9äöüÄÖÜß\s.,!?:;()\'"„“«»_+-]{5,120}$/u', $title)) {
-            $errors['title'] = "Der Titel enthält ungültige Zeichen oder erfüllt die Länge von 5-120 Zeichen nicht.";
-        }
-        echo "Titelvalidierung erfolgreich";
 
-        // --------------------- Eingabeüberprüfung des Contents: -----------------------
-        $content = $_POST["content"];
-        $zeichenAnzahl = mb_strlen($content);
-        if ($zeichenAnzahl <= 7000 && $zeichenAnzahl > 10) {
-            $validatedContent = $content;
-        }else{
+        if (!articleContentValidator($content)) {
             $_SESSION["message"] = "invalid_content";
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
-        echo "Contentvalidierung erfolgreich";
 
-        // --------------------- -Eingabevalidierung der Kategorie: --------------------
-        $category = $_POST["category"];
-        $allowedCategories = [
-            'deutsch', 'englisch', 'franzoesisch', 'latein', 'literatur',
-            'mathe', 'biologie', 'chemie', 'physik', 'informatik', 'astronomie',
-            'geschichte', 'erdkunde', 'sozialkunde', 'wirtschaft', 'religion',
-            'ethik', 'philosophie', 'psychologie', 'kunst', 'musik', 'theater',
-            'technik', 'werken', 'hauswirtschaft', 'sport'
-        ];
-        if (!in_array($category, $allowedCategories, true)) {
+        if (!articleCategoryValidator($category)) {
             $_SESSION["message"] = "invalid_category";
             header("location: ../../index.php?pfad=createArticle");
             exit();
         }
-        $validatedCategory = $category;
-        echo "Kategorievalidierung erfolgreich";
 
-        // -------------------------- Eingabevalidierung der tags: ----------------------
-        if (isset($_POST['tags'])) {
-            $tags = $_POST['tags'];
-        } else {
-            $tags = '';
-        }
-        $validatedTags = [];
-        $rawTags = explode(',', $tags); // String mit Kommas in array...
-
-        foreach ($rawTags as $rawTag) {
-            // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
-            $tag = trim($rawTag);
-
-            // leere Elemente überspringen:
-            if ($tag === '') {
-                continue;
-            }
-
-            // Tag mit Regex prüfen:
-            $tagPattern = '/^[a-zA-Z0-9äöüÄÖÜß\s-]{2,50}$/u'; //Erlaubt: Buchstaben, Zahlen, Bindestriche, Leerzeichen; 2-50 Zeichen
-            if (preg_match($tagPattern, $tag)) {
-                $validatedTags[] = $tag;
-            } else {
-                $_SESSION["message"] = "invalid_tags";
-                header("location: ../../index.php?pfad=createArticle");
-                exit();
-            }
-        }
-        // Duplikate entfernen:
-        $validatedTags = array_unique($validatedTags);
-        $validatedTags = implode(',', $validatedTags);
-        echo "Tagvalidierung erfolgreich";
-
-        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
-        if (!isset($validatedTitle) || !isset($validatedContent) || !isset($validatedAuthor) || !isset($validatedCategory) || !isset($validatedTags)) {
-            $_SESSION["message"] = "validation_missing";
+        if (!articleTagValidator($tags)) {
+            $_SESSION["message"] = "invalid_tags";
             header("location: ../../index.php?pfad=createArticle");
             exit();
         } else {
-            try {
-                $articleManager = ArticleManager::getInstance();
-                $articleManager->addArticle($validatedTitle, $validatedContent, $validatedAuthor, $validatedCategory, $validatedTags);
-                echo "Speichern erfolgreich";
-            } catch (Exception $e){
-                $_SESSION["message"] = "internal_error";
-                header("location: ../../index.php?pfad=createArticle");
-                exit();
+            $cleanedTags = [];
+            $rawTags = explode(',', $tags);
+            foreach ($rawTags as $rawTag) {
+                // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
+                $tag = trim($rawTag);
+                $cleanedTags[] = $tag;
             }
-            $_SESSION["message"] = "new_article";
-            // Weiterleitung zur Homepage
-            header("location: ../../index.php");
+            // Duplikate entfernen:
+            $cleanedTags = array_unique($cleanedTags);
+            $cleanedTags = implode(',', $cleanedTags);
+        }
+        // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
+        try {
+            $articleManager = ArticleManager::getInstance();
+            $articleManager->addArticle($title, $content, $author, $category, $cleanedTags);
+
+            // Formulardaten nach erfolgreichem Erstellen aus der Session löschen
+            unset($_SESSION["old_title"], $_SESSION["old_content"], $_SESSION["old_category"], $_SESSION["old_tags"]);
+
+        } catch (Exception $e){
+            $_SESSION["message"] = "internal_error";
+            header("location: ../../index.php?pfad=createArticle");
             exit();
         }
+
+        $_SESSION["message"] = "new_article";
+        // Weiterleitung zur Homepage
+        header("location: ../../index.php");
+        exit();
     }
 }
 

From f99b7bc8ab8db1b6e18925f54d852681f661cc03 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 14:02:11 +0200
Subject: [PATCH 101/102] Update updateArticle-controller.php

---
 php/controller/updateArticle-controller.php | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 3a40f5c..6ff32ec 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -28,11 +28,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         $content = $_POST["content"];
         $author = "max.mustermann"; // TODO: später aus Session den angemeldeten Nutzer beziehen.
         $category = $_POST["category"];
-        if (isset($_POST['tags'])) {
-            $tags = $_POST['tags'];
-        } else {
-            $tags = '';
-        }
+        $tags = $_POST['tags'] ?? '';
 
         // -------------------------------- Validierung der Daten: -------------------------
         if (!articleAuthorValidator($author)) {

From 625dd35b9eb7287ff03c022c7a875942916d9121 Mon Sep 17 00:00:00 2001
From: NOrtmann1 <ortmann.niklas@yahoo.de>
Date: Mon, 1 Jun 2026 14:02:31 +0200
Subject: [PATCH 102/102] Update createArticle-controller.php

---
 php/controller/createArticle-controller.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/php/controller/createArticle-controller.php b/php/controller/createArticle-controller.php
index 0270a00..d4c1cec 100644
--- a/php/controller/createArticle-controller.php
+++ b/php/controller/createArticle-controller.php
@@ -2,12 +2,14 @@
 session_start();
 require_once '../model/LocalArticleManager.php';
 require_once '../model/ArticleManager.php';
+require_once '../validator/article-validator.php';
 
 if ($_SERVER["REQUEST_METHOD"] === "POST") {
     $_SESSION["old_title"]    = $_POST["title"] ?? '';
     $_SESSION["old_content"]  = $_POST["content"] ?? '';
     $_SESSION["old_category"] = $_POST["category"] ?? '';
     $_SESSION["old_tags"]     = $_POST["tags"] ?? '';
+
     if(!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
         header("location: ../../index.php?pfad=createArticle");