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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/38263">38263</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/38263","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-08-15 19:15:48 +0000 (Mon, 15 Aug 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Post Thumbnails: Restore thumbnail support for media files.

* Allow to add/remove a featured image to `attachment:audio` and `attachment:video` post types, see <a href="https://core.trac.wordpress.org/changeset/27657">[27657]</a>.
* Change conditionals to check for theme OR post type support.
* Add tests for <a href="https://core.trac.wordpress.org/ticket/12922">#12922</a>.

Broken in <a href="https://core.trac.wordpress.org/changeset/37658">[37658]</a>.

Props flixos90, joemcgill, DrewAPicture, wonderboymusic.
See <a href="https://core.trac.wordpress.org/ticket/12922">#12922</a>.
Fixes <a href="https://core.trac.wordpress.org/ticket/37658">#37658</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludespostphp">trunk/src/wp-includes/post.php</a></li>
<li><a href="#trunktestsphpunittestspostthumbnailsphp">trunk/tests/phpunit/tests/post/thumbnails.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludespostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/post.php    2016-08-15 18:21:13 UTC (rev 38262)
+++ trunk/src/wp-includes/post.php      2016-08-15 19:15:48 UTC (rev 38263)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3259,16 +3259,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        // Set or remove featured image.
-       if ( isset( $postarr['_thumbnail_id'] ) && ( post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type ) ) {
-               $thumbnail_id = intval( $postarr['_thumbnail_id'] );
-               if ( -1 === $thumbnail_id ) {
-                       delete_post_thumbnail( $post_ID );
-               } else {
-                       set_post_thumbnail( $post_ID, $thumbnail_id );
-               }
-       }
-
</del><span class="cx" style="display: block; padding: 0 10px">         if ( ! empty( $postarr['meta_input'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                foreach ( $postarr['meta_input'] as $field => $value ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        update_post_meta( $post_ID, $field, $value );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3292,6 +3282,27 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        // Set or remove featured image.
+       if ( isset( $postarr['_thumbnail_id'] ) ) {
+               $thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type;
+               if ( ! $thumbnail_support && 'attachment' === $post_type && $post_mime_type ) {
+                       if ( wp_attachment_is( 'audio', $post_ID ) ) {
+                               $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
+                       } elseif ( wp_attachment_is( 'video', $post_ID ) ) {
+                               $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
+                       }
+               }
+
+               if ( $thumbnail_support ) {
+                       $thumbnail_id = intval( $postarr['_thumbnail_id'] );
+                       if ( -1 === $thumbnail_id ) {
+                               delete_post_thumbnail( $post_ID );
+                       } else {
+                               set_post_thumbnail( $post_ID, $thumbnail_id );
+                       }
+               }
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         clean_post_cache( $post_ID );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        $post = get_post( $post_ID );
</span></span></pre></div>
<a id="trunktestsphpunittestspostthumbnailsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/post/thumbnails.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/post/thumbnails.php     2016-08-15 18:21:13 UTC (rev 38262)
+++ trunk/tests/phpunit/tests/post/thumbnails.php       2016-08-15 19:15:48 UTC (rev 38263)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -233,4 +233,86 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals( wp_get_attachment_url( self::$attachment_id ), $actual );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * @ticket 12922
+        */
+       function test__wp_preview_post_thumbnail_filter() {
+               $old_post = isset( $GLOBALS['post'] ) ? $GLOBALS['post'] : null;
+
+               $GLOBALS['post'] = self::$post;
+               $_REQUEST['_thumbnail_id'] = self::$attachment_id;
+
+               $result = _wp_preview_post_thumbnail_filter( '', self::$post->ID, '_thumbnail_id' );
+               $this->assertEquals( self::$attachment_id, $result );
+
+               unset( $_REQUEST['_thumbnail_id'] );
+               if ( null === $old_post ) {
+                       unset( $GLOBALS['post'] );
+               } else {
+                       $GLOBALS['post'] = $old_post;
+               }
+       }
+
+       /**
+        * @ticket 12922
+        */
+       function test_insert_post_with_post_thumbnail() {
+               $post_id = wp_insert_post( array(
+                       'ID'            => self::$post->ID,
+                       'post_status'   => 'publish',
+                       'post_content'  => rand_str(),
+                       'post_title'    => rand_str(),
+                       '_thumbnail_id' => self::$attachment_id,
+               ) );
+
+               $thumbnail_id = get_post_thumbnail_id( $post_id );
+               $this->assertEquals( self::$attachment_id, $thumbnail_id );
+
+               $post_id = wp_insert_post( array(
+                       'ID'            => $post_id,
+                       'post_status'   => 'publish',
+                       'post_content'  => rand_str(),
+                       'post_title'    => rand_str(),
+                       '_thumbnail_id' => - 1, // -1 removes post thumbnail.
+               ) );
+
+               $thumbnail_id = get_post_thumbnail_id( $post_id );
+               $this->assertEmpty( $thumbnail_id );
+       }
+
+       /**
+        * @ticket 37658
+        */
+       function test_insert_attachment_with_post_thumbnail() {
+               // Audio files support featured images.
+               $post_id = wp_insert_post( array(
+                       'post_type'      => 'attachment',
+                       'post_status'    => 'inherit',
+                       'post_content'   => rand_str(),
+                       'post_title'     => rand_str(),
+                       'post_mime_type' => 'audio/mpeg',
+                       'post_parent'    => 0,
+                       'file'           => DIR_TESTDATA . '/audio/test-noise.mp3', // File does not exist, but does not matter here.
+                       '_thumbnail_id'  => self::$attachment_id,
+               ) );
+
+               $thumbnail_id = get_post_thumbnail_id( $post_id );
+               $this->assertEquals( self::$attachment_id, $thumbnail_id );
+
+               // Images do not support featured images.
+               $post_id = wp_insert_post( array(
+                       'post_type'      => 'attachment',
+                       'post_status'    => 'inherit',
+                       'post_content'   => rand_str(),
+                       'post_title'     => rand_str(),
+                       'post_mime_type' => 'image/jpeg',
+                       'post_parent'    => 0,
+                       'file'           => DIR_TESTDATA . '/images/canola.jpg',
+                       '_thumbnail_id'  => self::$attachment_id,
+               ) );
+
+               $thumbnail_id = get_post_thumbnail_id( $post_id );
+               $this->assertEmpty( $thumbnail_id );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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