Ticket #8994: 8994.diff

src/wp-includes/default-filters.php

@@ -341 +341 @@
 add_action( 'atom_head', 'atom_site_icon' );
 add_action( 'rss2_head', 'rss2_site_icon' );
 
+// Feed Post Thumbnail.
+add_action( 'rss2_item', 'the_post_thumbnail_rss' );
+
 
 // WP Cron.
 if ( ! defined( 'DOING_CRON' ) ) {

src/wp-includes/feed-rss2.php

@@ -27 +27 @@
         xmlns:atom="http://www.w3.org/2005/Atom"
         xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
         xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
+        xmlns:media="http://search.yahoo.com/mrss/"
         <?php
         /**
          * Fires at the end of the RSS root to add namespaces.

src/wp-includes/feed.php

@@ -613 +613 @@
 }
 
 /**
+ * Displays post thumbnail in RSS2.
+ *
+ * @since x.x.x
+ */
+function the_post_thumbnail_rss() {
+        if ( ! has_post_thumbnail() ) {
+                return;
+        }
+
+        $image     = get_post( get_post_thumbnail_id() );
+        $full      = wp_get_attachment_image_src( $image->ID, 'full' );
+        $thumbnail = wp_get_attachment_image_src( $image->ID, 'thumbnail' );
+        ?>
+        <media:content
+                url="<?php echo esc_url( $full[0] ); ?>"
+                type="<?php echo esc_attr( $image->post_mime_type ); ?>"
+                medium="image"
+                width="<?php echo absint( $full[1] ); ?>"
+                height="<?php echo absint( $full[2] ); ?>"
+        >
+                <media:title type="plain">
+                        <![CDATA[<?php echo sanitize_text_field( $image->post_title ); ?>]]>
+                </media:title>
+                <media:thumbnail
+                        url="<?php echo esc_url( $thumbnail[0] ); ?>"
+                        width="<?php echo absint( $thumbnail[1] ); ?>"
+                        height="<?php echo absint( $thumbnail[2] ); ?>" />
+                <?php if ( ! empty( $image->post_content ) ) : ?>
+                        <media:description type="plain"><![CDATA[<?php echo wp_kses_post( $image->post_content ); ?>]]></media:description>
+                <?php endif; ?>
+                <?php if ( ! empty( $image->post_author ) ) : ?>
+                        <media:credit role="author" scheme="urn:ebu"><?php echo esc_html( get_the_author_meta( 'display_name', $image->post_author ) ); ?></media:credit>
+                <?php endif; ?>
+        </media:content>
+        <?php
+}
+
+/**
  * Displays Site Icon in atom feeds.
  *
  * @since 4.3.0

tests/phpunit/tests/feed/rss2.php

@@ -35 +35 @@
                         )
                 );
 
+                $attachment_id = self::factory()->attachment->create_upload_object( DIR_TESTDATA . '/images/canola.jpg' );
+
                 // Set a predictable time for testing date archives.
                 self::$post_date = strtotime( '2003-05-27 10:07:53' );
 
@@ -57 +59 @@
                 // Assign a category to those posts.
                 foreach ( self::$posts as $post ) {
                         wp_set_object_terms( $post, self::$category->slug, 'category' );
+                        set_post_thumbnail( $post, $attachment_id );
                 }
         }
 
@@ -260 +263 @@
                         // Comment RSS.
                         $comment_rss = xml_find( $items[ $key ]['child'], 'wfw:commentRss' );
                         $this->assertSame( html_entity_decode( get_post_comments_feed_link( $post->ID ) ), $comment_rss[0]['content'] );
+
+                        // Post Thumbnail.
+                        $post_thumbnail = xml_find( $items[ $key ]['child'], 'media:content' );
+                        $this->assertSame( get_the_post_thumbnail_url( $post ), $post_thumbnail[0]['attributes']['url'] );
                 }
         }