Update DatabaseArticleManager.php

php/model/DatabaseArticleManager.php

@@ -63,12 +63,9 @@ class DatabaseArticleManager implements ArticleManagerDAO {
                     VALUES (:title, :content, :author, :category, :tags);";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
 
             // Verknüpft die übergebenen Parameter exakt mit den SQL-Platzhaltern
-            $success = $command->execute([
+            $command->execute([
                 ":title"    => $title,
                 ":content"  => $content,
                 ":author"   => $author,
@@ -76,14 +73,14 @@ class DatabaseArticleManager implements ArticleManagerDAO {
                 ":tags"     => $tags
             ]);
 
-            if (!$success) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             return intval($db->lastInsertId());
 
         } catch (PDOException $e) {
-            throw new InternalServerErrorException($e->getMessage());
+            // NEU: Die rohe PDO-Fehlermeldung wird nicht mehr direkt in die
+            // eigene Exception übernommen (Kapselung), sondern durch eine
+            // generische, sprechende Meldung ersetzt - analog zu den übrigen
+            // Methoden dieser Klasse und zu DatabaseUserManager.
+            throw new InternalServerErrorException("internal_error");
         }
     }
 
@@ -106,11 +103,8 @@ class DatabaseArticleManager implements ArticleManagerDAO {
                     WHERE id = :id;";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
 
-            $success = $command->execute([
+            $command->execute([
                 ":id"       => $id,
                 ":title"    => $article->getTitle(),
                 ":content"  => $article->getContent(),
@@ -120,7 +114,7 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             ]);
 
             // rowCount() prüft, ob eine Zeile mit dieser ID existierte und geändert werden konnte
-            if (!$success || $command->rowCount() === 0) {
+            if ($command->rowCount() === 0) {
                 // Falls die ID nicht existiert, prüfen wir, ob sie überhaupt da ist
                 if (!$this->getArticle($id)) {
                     throw new NotFoundException("missing_id");
@@ -148,13 +142,7 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             $sql = "DELETE FROM articles WHERE id = :id;";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
-            if (!$command->execute([":id" => $id])) {
-                throw new InternalServerErrorException("internal_error");
-            }
+            $command->execute([":id" => $id]);
         } catch (PDOException $exc) {
             throw new InternalServerErrorException("internal_error");
         }
@@ -167,10 +155,6 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             $sql = "SELECT * FROM articles WHERE id = :id;";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             $command->execute([":id" => $id]);
             $row = $command->fetch(PDO::FETCH_ASSOC);
 
@@ -202,10 +186,6 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             $sql = "SELECT * FROM articles;";
 
             $command = $db->query($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             $rows = $command->fetchAll(PDO::FETCH_ASSOC);
             $articles = [];
 
@@ -234,10 +214,6 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             $sql = "SELECT * FROM articles WHERE author = :author;";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             $command->execute([":author" => $author]);
             $rows = $command->fetchAll(PDO::FETCH_ASSOC);
             $filteredArticles = [];
@@ -270,10 +246,6 @@ class DatabaseArticleManager implements ArticleManagerDAO {
             $sql = "SELECT * FROM articles WHERE category = :category;";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             $command->execute([":category" => $category]);
             $rows = $command->fetchAll(PDO::FETCH_ASSOC);
             $filteredArticles = [];
@@ -318,21 +290,14 @@ class DatabaseArticleManager implements ArticleManagerDAO {
                        OR tags LIKE :keyword";
 
             $command = $db->prepare($sql);
-            if (!$command) {
-                throw new InternalServerErrorException("internal_error");
-            }
 
             // Wildcards für die Suche hinzufügen
             $searchParam = '%' . $cleankeyword . '%';
 
-            $success = $command->execute([
+            $command->execute([
                 ":keyword" => $searchParam
             ]);
 
-            if (!$success) {
-                throw new InternalServerErrorException("internal_error");
-            }
-
             $rows = $command->fetchAll(PDO::FETCH_ASSOC);
             $filteredArticles = [];