Issue #3366706 by DamienMcKenna: Add support for media fields in media:thumbnail.

CHANGELOG.txt

@@ -3,6 +3,7 @@ Advanced Views RSS Feed 8.x-2.x-dev, 2022-xx-xx
 #3365915 by DamienMcKenna: Merge Views RSS Media submodules.
 #3299453 by afsch, DamienMcKenna, Project Update Bot: Automated Drupal 10
   compatibility fixes for media submodules.
+#3366706 by DamienMcKenna: Add support for media fields in media:thumbnail.
 
 
 Advanced Views RSS Feed 8.x-2.0, 2023-06-14

modules/views_rss_media/views_rss_media.inc

@@ -5,6 +5,7 @@
  * Preprocess functions for Views RSS: Media Elements module.
  */
 
+use Drupal\file\Entity\File;
 use Drupal\file\FileInterface;
 use Drupal\image\Entity\ImageStyle;
 
@@ -96,26 +97,27 @@ function views_rss_media_preprocess_item_thumbnail(&$variables) {
 
   $variables['elements'] = array();
   foreach ($variables['raw']['items'] as $item) {
+    // Start building RSS element.
+    $element = array(
+      'key' => 'media:thumbnail',
+      'attributes' => array(),
+    );
+
     // File fields.
+    $file = NULL;
     if (!empty($item['rendered']['#file'])) {
       $file = $item['rendered']['#file'];
     }
     // Image fields.
-    if (!empty($item['rendered']['#item']->entity)) {
+    elseif (!empty($item['rendered']['#item']->entity)) {
       $file = $item['rendered']['#item']->entity;
     }
 
-    // Start building RSS element.
-    $element = array(
-      'key' => 'media:thumbnail',
-      'attributes' => array(),
-    );
-
     // File entity found.
     if (!empty($file)) {
       // Image style is defined, need to link to resized version.
-      if ($image_style_name = $item['rendered']['#image_style']) {
-        $image_style = ImageStyle::load($image_style_name);
+      if (!empty($item['rendered']['#image_style'])) {
+        $image_style = ImageStyle::load($item['rendered']['#image_style']);
         $element['attributes']['url'] = \Drupal::service('file_url_generator')->generateAbsoluteString($image_style->buildUri($file->getFileUri()));
       }
       // Normal image size.
@@ -123,6 +125,25 @@ function views_rss_media_preprocess_item_thumbnail(&$variables) {
         $element['attributes']['url'] = $file->createFileUrl(FALSE);
       }
     }
+
+    // Media fields.
+    elseif (!empty($item['rendered']['#media'])) {
+      // Render the output so the URL can be extracted.
+      $output = \Drupal::service('renderer')->renderPlain($item['rendered'], FALSE);
+
+      // Extract the URL from the output string.
+      preg_match('/src="(.*)" width="(.*)" height="(.*)" alt="([^"]*)"/', $output, $matches);
+      if (!empty($matches)) {
+        $element['attributes']['url'] = $matches[1];
+        $element['attributes']['width'] = $matches[2];
+        $element['attributes']['height'] = $matches[3];
+        // @todo Work out a better location for this.
+        // @code
+        // $element['attributes']['title'] = $matches[4];
+        // @endcode
+      }
+    }
+
     // No file entity found, but something still was assigned to be displayed
     // as enclosure, so we just put its value in the url attribute.
     elseif (!empty($item['rendered']['#markup'])) {