Feature: Link Termine to WordPress posts with Mehr Infos button

includes/class-kgv-termine-plugin.php

@@ -25,6 +25,7 @@ class KGV_Termine_Plugin {
         add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_assets'));
         add_action('wp_enqueue_scripts', array($this, 'enqueue_front_assets'));
         add_action('init', array($this, 'register_shortcodes'));
+        add_action('init', array($this, 'maybe_upgrade_table'));
         add_action('admin_post_kgv_save_termin', array($this, 'handle_save_termin'));
         add_action('admin_post_kgv_delete_termin', array($this, 'handle_delete_termin'));
         add_filter('query_vars', array($this, 'register_query_vars'));
@@ -51,6 +52,7 @@ class KGV_Termine_Plugin {
             is_published TINYINT(1) NOT NULL DEFAULT 1,
             created_at DATETIME NOT NULL,
             updated_at DATETIME NOT NULL,
+            post_id BIGINT UNSIGNED NULL DEFAULT NULL,
             PRIMARY KEY (id),
             KEY event_date (event_date),
             KEY is_published (is_published)
@@ -59,6 +61,40 @@ class KGV_Termine_Plugin {
         dbDelta($sql);
     }
 
+    public function maybe_upgrade_table() {
+        global $wpdb;
+
+        $col = $wpdb->get_results(
+            $wpdb->prepare(
+                "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = %s AND TABLE_NAME = %s AND COLUMN_NAME = 'post_id'",
+                DB_NAME,
+                $this->table_name
+            )
+        );
+
+        if ( empty( $col ) ) {
+            require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+            $charset_collate = $wpdb->get_charset_collate();
+            $sql = "CREATE TABLE {$this->table_name} (
+                id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+                title VARCHAR(255) NOT NULL,
+                event_date DATETIME NOT NULL,
+                owner VARCHAR(255) NULL,
+                location VARCHAR(255) NULL,
+                summary TEXT NULL,
+                description LONGTEXT NULL,
+                is_published TINYINT(1) NOT NULL DEFAULT 1,
+                created_at DATETIME NOT NULL,
+                updated_at DATETIME NOT NULL,
+                post_id BIGINT UNSIGNED NULL DEFAULT NULL,
+                PRIMARY KEY (id),
+                KEY event_date (event_date),
+                KEY is_published (is_published)
+            ) {$charset_collate};";
+            dbDelta($sql);
+        }
+    }
+
     public function enqueue_admin_assets($hook) {
         if (strpos((string) $hook, 'kgv-termine') === false) {
             return;
@@ -161,6 +197,8 @@ class KGV_Termine_Plugin {
         $description = wp_kses_post(wp_unslash($_POST['description'] ?? ''));
         $is_published = isset($_POST['is_published']) ? (int) wp_unslash($_POST['is_published']) : 1;
         $is_published = $is_published === 1 ? 1 : 0;
+        $post_id = isset($_POST['post_id']) ? absint($_POST['post_id']) : 0;
+        $post_id = $post_id > 0 ? $post_id : null;
 
         if ($title === '' || $event_date === '' || strtotime($event_date) === false) {
             $target = $id ? admin_url('admin.php?page=kgv-termine-new&termin_id=' . $id . '&message=missing') : admin_url('admin.php?page=kgv-termine-new&message=missing');
@@ -179,10 +217,11 @@ class KGV_Termine_Plugin {
             'summary' => $summary,
             'description' => $description,
             'is_published' => $is_published,
+            'post_id' => $post_id,
             'updated_at' => $now,
         );
 
-        $formats = array('%s', '%s', '%s', '%s', '%s', '%s', '%d', '%s');
+        $formats = array('%s', '%s', '%s', '%s', '%s', '%s', '%d', '%d', '%s');
 
         if ($id) {
             $wpdb->update($this->table_name, $data, array('id' => $id), $formats, array('%d'));
@@ -191,7 +230,7 @@ class KGV_Termine_Plugin {
         }
 
         $data['created_at'] = $now;
-        $wpdb->insert($this->table_name, $data, array('%s', '%s', '%s', '%s', '%s', '%s', '%d', '%s', '%s'));
+        $wpdb->insert($this->table_name, $data, array('%s', '%s', '%s', '%s', '%s', '%s', '%d', '%d', '%s', '%s'));
 
         wp_safe_redirect(admin_url('admin.php?page=kgv-termine&message=created'));
         exit;
@@ -269,6 +308,8 @@ class KGV_Termine_Plugin {
         $summary = $row ? $row->summary : '';
         $description = $row ? $row->description : '';
         $is_published = $row ? (int) $row->is_published : 1;
+        $post_id = $row && !empty($row->post_id) ? (int) $row->post_id : 0;
+        $posts = get_posts(array('post_type' => 'post', 'post_status' => 'publish', 'numberposts' => -1, 'orderby' => 'title', 'order' => 'ASC'));
         ?>
         <div class="wrap kgv-admin-wrap">
             <div class="kgv-admin-header">
@@ -312,6 +353,16 @@ class KGV_Termine_Plugin {
                             </select>
                         </div>
 
+                        <div class="kgv-form-field">
+                            <label for="kgv-post-id">Verknüpfter Beitrag</label>
+                            <select id="kgv-post-id" name="post_id">
+                                <option value="0">— kein Beitrag —</option>
+                                <?php foreach ($posts as $p) : ?>
+                                    <option value="<?php echo esc_attr($p->ID); ?>" <?php selected($post_id, $p->ID); ?>><?php echo esc_html($p->post_title); ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
                         <div class="kgv-form-field kgv-form-field-full">
                             <label for="kgv-summary">Kurzbeschreibung</label>
                             <textarea id="kgv-summary" name="summary" rows="3"><?php echo esc_textarea($summary); ?></textarea>
@@ -411,7 +462,14 @@ class KGV_Termine_Plugin {
             if (!empty($row->summary)) {
                 echo '<div class="kgv-termin-excerpt">' . esc_html($row->summary) . '</div>';
             }
-            echo '<div class="kgv-termin-actions"><a class="kgv-termin-btn" href="' . esc_url($link) . '">Details ansehen</a></div>';
+            echo '<div class="kgv-termin-actions"><a class="kgv-termin-btn" href="' . esc_url($link) . '">Details ansehen</a>';
+            if (!empty($row->post_id)) {
+                $post_url = get_permalink((int) $row->post_id);
+                if ($post_url) {
+                    echo '<a class="kgv-termin-btn kgv-termin-btn-secondary" href="' . esc_url($post_url) . '">Mehr Infos</a>';
+                }
+            }
+            echo '</div>';
             echo '</div>';
             echo '</article>';
         }
@@ -461,6 +519,12 @@ class KGV_Termine_Plugin {
             echo '<p class="kgv-termin-summary"><strong>' . esc_html($row->summary) . '</strong></p>';
         }
         echo '<div class="kgv-termin-content">' . wpautop(wp_kses_post($row->description)) . '</div>';
+        if (!empty($row->post_id)) {
+            $post_url = get_permalink((int) $row->post_id);
+            if ($post_url) {
+                echo '<div class="kgv-termin-more-info"><a class="kgv-termin-btn" href="' . esc_url($post_url) . '">Mehr Infos</a></div>';
+            }
+        }
         echo '</div>';
         echo '</article>';
         return ob_get_clean();

kgv-termine-plugin.php

@@ -5,9 +5,11 @@
  * Description: Eigene Terminverwaltung mit separatem Admin-Interface, Frontend-Liste und Detailansicht per Shortcode.
  * Update URI: https://git.apex-project.de/Wordpress_Plugins/KGV-Termine.git
  * Gitea Plugin URI: https://git.apex-project.de/Wordpress_Plugins/KGV-Termine.git
- * Version: 1.0.7
+ * Version: 1.0.8
  * Author: Ronny Grobel
  * Author URI: https://apex-project.de/
+ * License: GPL v2 or later
+ * License URI: https://www.gnu.org/licenses/gpl-2.0.html
  * Text Domain: kgv-termine-admin
  * Requires Plugins: KGV-Updater
  */

readme.txt

@@ -3,7 +3,7 @@ Contributors: ronnygrobel
 Tags: events, termine, kalender, verein, shortcode
 Requires at least: 6.0
 Tested up to: 6.8
-Stable tag: 1.0.7
+Stable tag: 1.0.8
 Requires PHP: 7.2
 License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
@@ -40,6 +40,9 @@ Ja, mit `[kgv_termine_sidebar]`.
 
 == Changelog ==
 
+= 1.0.8 =
+* Feature: Verknüpfung zu WordPress-Beiträgen. Im Termin kann ein Beitrag ausgewählt werden, der im Frontend als "Mehr Infos"-Button angezeigt wird.
+
 = 1.0.7 =
 * Versionsabgleich zwischen Plugin-Header und Readme.
 * WordPress-Readme-Format weiter vereinheitlicht.