webprogrammierung/content/updateArticle.php

<?php
$user = $user ?? null;
if (!isset($_SESSION["user"])) {
    header("Location: index.php?pfad=login");
    exit();
}
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($id) && !empty($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 include_once "includes/alertMessages.php"?>

        <input type="text" id="title" name="title"
               value="<?php
               if (isset($_SESSION['old_title']) && !empty($_SESSION['old_title'])){
                   echo htmlspecialchars($_SESSION['old_title']);
                   unset($_SESSION['old_title']);
               }elseif (isset($title) && !empty($title)){
                   echo htmlspecialchars($title);
               }

               ?>"
               placeholder="Titel hier eingeben" required>
        <textarea id="content" name="content" placeholder="Schreibe deinen Beitrag..."><?php if (isset($_SESSION['old_content']) && !empty($_SESSION['old_content'])){echo htmlspecialchars($_SESSION['old_content']); unset($_SESSION['old_content']);}elseif (isset($content) && !empty($content)){echo htmlspecialchars($content);}?></textarea>

    </main>

    <!-- Seitenleiste -->
    <aside class="editor-sidebar">

        <div class="sidebar-block">
            <button type="submit" id="editor-button" class="button">Änderungen speichern</button>
        </div>

        <div class="sidebar-block">
            <label for="category">Kategorie <span class="required">*</span></label>
            <select id="category" name="category" required>
                <option disabled <?php echo (!isset($_SESSION['old_category']) || $_SESSION['old_category'] === '') ? 'selected' : ''; ?>>Kategorie wählen...</option>

                <optgroup label="Sprachen">
                    <option value="deutsch" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'deutsch') ? 'selected' : ''; ?>>Deutsch</option>
                    <option value="englisch" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'englisch') ? 'selected' : ''; ?>>Englisch</option>
                    <option value="franzoesisch" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'franzoesisch') ? 'selected' : ''; ?>>Französisch</option>
                    <option value="latein" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'latein') ? 'selected' : ''; ?>>Latein</option>
                    <option value="literatur" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'literatur') ? 'selected' : ''; ?>>Literatur</option>
                </optgroup>

                <optgroup label="MINT">
                    <option value="mathe" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'mathe') ? 'selected' : ''; ?>>Mathematik</option>
                    <option value="biologie" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'biologie') ? 'selected' : ''; ?>>Biologie</option>
                    <option value="chemie" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'chemie') ? 'selected' : ''; ?>>Chemie</option>
                    <option value="physik" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'physik') ? 'selected' : ''; ?>>Physik</option>
                    <option value="informatik" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'informatik') ? 'selected' : ''; ?>>Informatik</option>
                    <option value="astronomie" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'astronomie') ? 'selected' : ''; ?>>Astronomie</option>
                </optgroup>

                <optgroup label="Gesellschaft & Werte">
                    <option value="geschichte" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'geschichte') ? 'selected' : ''; ?>>Geschichte</option>
                    <option value="erdkunde" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'erdkunde') ? 'selected' : ''; ?>>Erdkunde</option>
                    <option value="sozialkunde" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'sozialkunde') ? 'selected' : ''; ?>>Sozialkunde</option>
                    <option value="wirtschaft" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'wirtschaft') ? 'selected' : ''; ?>>Wirtschaftskunde</option>
                    <option value="religion" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'religion') ? 'selected' : ''; ?>>Religion</option>
                    <option value="ethik" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'ethik') ? 'selected' : ''; ?>>Ethikunterricht</option>
                    <option value="philosophie" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'philosophie') ? 'selected' : ''; ?>>Philosophie</option>
                    <option value="psychologie" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'psychologie') ? 'selected' : ''; ?>>Psychologie</option>
                    <option value="kunst" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'kunst') ? 'selected' : ''; ?>>Kunst</option>
                    <option value="musik" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'musik') ? 'selected' : ''; ?>>Musik</option>
                    <option value="theater" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'theater') ? 'selected' : ''; ?>>Theater</option>
                </optgroup>

                <optgroup label="Technik & Praxis">
                    <option value="technik" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'technik') ? 'selected' : ''; ?>>Technik</option>
                    <option value="werken" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'werken') ? 'selected' : ''; ?>>Werken</option>
                    <option value="hauswirtschaft" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'hauswirtschaft') ? 'selected' : ''; ?>>Hauswirtschaft</option>
                    <option value="sport" <?php echo (isset($_SESSION['old_category']) && $_SESSION['old_category'] === 'sport') ? 'selected' : ''; ?>>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($_SESSION['old_tags']) && !empty($_SESSION['old_tags'])){
                       echo htmlspecialchars($_SESSION['old_tags']);
                       unset($_SESSION['old_tags']);
                   } elseif (isset($tags) && !empty($tags)){
                       echo htmlspecialchars($tags);
                   }
                   ?>"
                   placeholder="z.B. Technik, IT (mit Komma trennen)">
        </div>

    </aside>

</form>