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<title>[12352] trunk/wp-admin/includes/media.php: Do not show &quot;Use as thumbnail&quot;
  in standalone media browser,
  but DO show it when you upload a new image on a post.</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/12352">12352</a></dd>
<dt>Author</dt> <dd>markjaquith</dd>
<dt>Date</dt> <dd>2009-12-10 07:04:01 +0000 (Thu, 10 Dec 2009)</dd>
</dl>

<h3>Log Message</h3>
<pre>Do not show &quot;Use as thumbnail&quot; in standalone media browser, but DO show it when you upload a new image on a post. fixes <a href="http://trac.wordpress.org/ticket/11366">#11366</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminincludesmediaphp">trunk/wp-admin/includes/media.php</a></li>
</ul>

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<div id="patch">
<h3>Diff</h3>
<a id="trunkwpadminincludesmediaphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/media.php (12351 => 12352)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/media.php        2009-12-10 06:14:36 UTC (rev 12351)
+++ trunk/wp-admin/includes/media.php        2009-12-10 07:04:01 UTC (rev 12352)
</span><span class="lines">@@ -1239,7 +1239,12 @@
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         $thumbnail = '';
</span><del>-        if ( 'image' == $type &amp;&amp; isset($_GET['post_id']) &amp;&amp; current_theme_supports( 'post-thumbnails', get_post_type($_GET['post_id']) ) &amp;&amp; get_post_thumbnail_id($_GET['post_id']) != $attachment_id )
</del><ins>+        $calling_post_id = 0;
+        if ( isset( $_GET['post_id'] ) )
+                $calling_post_id = $_GET['post_id'];
+        elseif ( isset( $_POST ) &amp;&amp; count( $_POST ) ) // Like for async-upload where $_GET['post_id'] isn't set
+                $calling_post_id = $post-&gt;post_parent;
+        if ( 'image' == $type &amp;&amp; $calling_post_id &amp;&amp; current_theme_supports( 'post-thumbnails', get_post_type( $calling_post_id ) ) &amp;&amp; get_post_thumbnail_id( $calling_post_id ) != $attachment_id )
</ins><span class="cx">                 $thumbnail = &quot;&lt;a class='wp-post-thumbnail' href='#' onclick='WPSetAsThumbnail(\&quot;$attachment_id\&quot;);return false;'&gt;&quot; . esc_html__( &quot;Use as thumbnail&quot; ) . &quot;&lt;/a&gt;&quot;;
</span><span class="cx"> 
</span><span class="cx">         if ( ( $send || $thumbnail || $delete ) &amp;&amp; !isset($form_fields['buttons']) )
</span></span></pre>
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