function add_images_to_sitemap($images, $post_id)
 {
     //check the content for $post_id contains a foogallery shortcode
     $post = get_post($post_id);
     //get all the foogallery shortcodes in the post
     $gallery_shortcodes = foogallery_extract_gallery_shortcodes($post->post_content);
     foreach ($gallery_shortcodes as $gallery_id => $shortcode) {
         //load each gallery
         $gallery = FooGallery::get_by_id($gallery_id);
         //add each image to the sitemap image array
         foreach ($gallery->attachments() as $attachment) {
             $image = array('src' => $attachment->url, 'title' => $attachment->caption, 'alt' => $attachment->alt);
             $images[] = $image;
         }
     }
     return $images;
 }
 public function attach_gallery_to_post($post_id, $post)
 {
     // check autosave
     if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
         return $post_id;
     }
     //only do this check for a page or post
     if ('post' == $post->post_type || 'page' == $post->post_type) {
         //first, clear any foogallery usages that the post might have
         delete_post_meta($post_id, FOOGALLERY_META_POST_USAGE);
         //if the content contains the foogallery shortcode then add a custom field
         $gallery_shortcodes = foogallery_extract_gallery_shortcodes($post->post_content);
         foreach ($gallery_shortcodes as $id => $shortcode) {
             add_post_meta($post_id, FOOGALLERY_META_POST_USAGE, $id, false);
         }
     }
 }
 public function attach_gallery_to_post($post_id, $post)
 {
     // check autosave
     if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
         return $post_id;
     }
     //only do this check for a page or post
     if ('post' == $post->post_type || 'page' == $post->post_type) {
         do_action('foogallery_start_attach_gallery_to_post', $post_id);
         //Clear any foogallery usages that the post might have
         delete_post_meta($post_id, FOOGALLERY_META_POST_USAGE);
         //get all foogallery shortcodes that are on the page/post
         $gallery_shortcodes = foogallery_extract_gallery_shortcodes($post->post_content);
         if (is_array($gallery_shortcodes) && count($gallery_shortcodes) > 0) {
             foreach ($gallery_shortcodes as $id => $shortcode) {
                 //if the content contains the foogallery shortcode then add a custom field
                 add_post_meta($post_id, FOOGALLERY_META_POST_USAGE, $id, false);
                 do_action('foogallery_attach_gallery_to_post', $post_id, $id);
             }
         }
     }
 }