src/packages/plg_content_mokoog/src/Extension/MokoOGContent.php

@@ -56,10 +56,11 @@ final class MokoOGContent extends CMSPlugin implements SubscriberInterface
 
         $formName = $form->getName();
 
-        // Add OG fields to article and menu item edit forms
+        // Add OG fields to article, menu item, and category edit forms
         $supportedForms = [
             'com_content.article',
             'com_menus.item',
+            'com_categories.categorycom_content',
         ];
 
         if (!\in_array($formName, $supportedForms, true)) {
@@ -81,7 +82,12 @@ final class MokoOGContent extends CMSPlugin implements SubscriberInterface
         }
 
         if ($id > 0) {
-            $contentType = ($formName === 'com_menus.item') ? 'menu' : 'com_content';
+            $formTypeMap = [
+                'com_content.article'              => 'com_content',
+                'com_menus.item'                   => 'menu',
+                'com_categories.categorycom_content' => 'com_content.category',
+            ];
+            $contentType = $formTypeMap[$formName] ?? 'com_content';
             $ogData      = $this->loadOgData($contentType, $id);
 
             if ($ogData) {
@@ -102,8 +108,9 @@ final class MokoOGContent extends CMSPlugin implements SubscriberInterface
         [$context, $article, $isNew] = array_values($event->getArguments());
 
         $supportedContexts = [
-            'com_content.article' => 'com_content',
-            'com_menus.item'      => 'menu',
+            'com_content.article'              => 'com_content',
+            'com_menus.item'                   => 'menu',
+            'com_categories.categorycom_content' => 'com_content.category',
         ];
 
         if (!isset($supportedContexts[$context])) {
@@ -143,8 +150,9 @@ final class MokoOGContent extends CMSPlugin implements SubscriberInterface
         [$context, $article] = array_values($event->getArguments());
 
         $supportedContexts = [
-            'com_content.article' => 'com_content',
-            'com_menus.item'      => 'menu',
+            'com_content.article'              => 'com_content',
+            'com_menus.item'                   => 'menu',
+            'com_categories.categorycom_content' => 'com_content.category',
         ];
 
         if (!isset($supportedContexts[$context])) {

src/packages/plg_system_mokoog/src/Extension/MokoOG.php

@@ -68,6 +68,20 @@ final class MokoOG extends CMSPlugin implements SubscriberInterface
         // Try to load custom OG data from the database
         $ogData = $this->loadOgData($option, $view, $id);
 
+        // For category views, also try category-level OG data as fallback
+        if ($option === 'com_content' && $view === 'category' && $id > 0) {
+            $catOg = $this->loadOgDataByType('com_content.category', $id);
+
+            if ($catOg) {
+                // Merge: category fills any gaps in the content-level data
+                foreach (['og_title', 'og_description', 'og_image', 'og_type', 'seo_title', 'meta_description', 'robots', 'canonical_url'] as $field) {
+                    if (empty($ogData->$field) && !empty($catOg->$field)) {
+                        $ogData->$field = $catOg->$field;
+                    }
+                }
+            }
+        }
+
         // --- SEO meta tags (set first, before OG) ---
         $this->applySeoTags($doc, $ogData);
 
@@ -199,6 +213,29 @@ final class MokoOG extends CMSPlugin implements SubscriberInterface
         return $db->loadObject() ?: $empty;
     }
 
+    /**
+     * Load OG data by content type and ID.
+     *
+     * @param   string  $contentType  Content type identifier
+     * @param   int     $contentId    Content ID
+     *
+     * @return  object|null
+     */
+    private function loadOgDataByType(string $contentType, int $contentId): ?object
+    {
+        $db    = Factory::getDbo();
+        $query = $db->getQuery(true)
+            ->select('*')
+            ->from($db->quoteName('#__mokoog_tags'))
+            ->where($db->quoteName('content_type') . ' = ' . $db->quote($contentType))
+            ->where($db->quoteName('content_id') . ' = ' . $contentId)
+            ->where($db->quoteName('published') . ' = 1');
+
+        $db->setQuery($query);
+
+        return $db->loadObject();
+    }
+
     /**
      * Load OG data by menu item ID.
      *
@@ -283,6 +320,26 @@ final class MokoOG extends CMSPlugin implements SubscriberInterface
                     return $imagesData['image_intro'];
                 }
             }
+
+            // Fallback: check the article's category for an image
+            if ($view === 'article') {
+                $catQuery = $db->getQuery(true)
+                    ->select($db->quoteName('cat.params'))
+                    ->from($db->quoteName('#__categories', 'cat'))
+                    ->join('INNER', $db->quoteName('#__content', 'a') . ' ON ' . $db->quoteName('a.catid') . ' = ' . $db->quoteName('cat.id'))
+                    ->where($db->quoteName('a.id') . ' = ' . (int) $id);
+
+                $db->setQuery($catQuery);
+                $catParams = $db->loadResult();
+
+                if ($catParams) {
+                    $catData = json_decode($catParams, true);
+
+                    if (!empty($catData['image'])) {
+                        return $catData['image'];
+                    }
+                }
+            }
         }
 
         return $this->params->get('default_image', '');