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<title>[14230] trunk/wp-includes/post.php:
  Allow edit posts page to save a empty set of terms for a custom hierarchical taxonomy
 .</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/14230">14230</a></dd>
<dt>Author</dt> <dd>dd32</dd>
<dt>Date</dt> <dd>2010-04-25 07:42:51 +0000 (Sun, 25 Apr 2010)</dd>
</dl>

<h3>Log Message</h3>
<pre>Allow edit posts page to save a empty set of terms for a custom hierarchical taxonomy. Props scribu for initial patch. See <a href="http://trac.wordpress.org/ticket/10122">#10122</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludespostphp">trunk/wp-includes/post.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludespostphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/post.php (14229 => 14230)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/post.php        2010-04-25 07:35:16 UTC (rev 14229)
+++ trunk/wp-includes/post.php        2010-04-25 07:42:51 UTC (rev 14230)
</span><span class="lines">@@ -2190,7 +2190,7 @@
</span><span class="cx">         $data = stripslashes_deep( $data );
</span><span class="cx">         $where = array( 'ID' =&gt; $post_ID );
</span><span class="cx"> 
</span><del>-        if ($update) {
</del><ins>+        if ( $update ) {
</ins><span class="cx">                 do_action( 'pre_post_update', $post_ID );
</span><span class="cx">                 if ( false === $wpdb-&gt;update( $wpdb-&gt;posts, $data, $where ) ) {
</span><span class="cx">                         if ( $wp_error )
</span><span class="lines">@@ -2229,13 +2229,19 @@
</span><span class="cx">         // old-style tags_input
</span><span class="cx">         if ( isset( $tags_input ) )
</span><span class="cx">                 wp_set_post_tags( $post_ID, $tags_input );
</span><del>-        // new-style support for all tag-like taxonomies
-        if ( !empty($tax_input) ) {
-                foreach ( $tax_input as $taxonomy =&gt; $tags ) {
-                        $taxonomy_obj = get_taxonomy($taxonomy);
-                        if ( current_user_can($taxonomy_obj-&gt;assign_cap) )
-                                wp_set_post_terms( $post_ID, $tags, $taxonomy );
-                }
</del><ins>+        // new-style support for all taxonomies
+        $tax_names = get_object_taxonomies( get_post($post_ID) ); 
+        foreach ( (array)$tax_names as $taxonomy ) {
+                if ( 'category' == $taxonomy ) // Handled seperately.
+                        continue;
+                $taxonomy_obj = get_taxonomy($taxonomy);
+                if ( !current_user_can($taxonomy_obj-&gt;assign_cap) )
+                        continue;
+                if ( !$taxonomy_obj-&gt;show_ui )
+                        continue;
+
+                $tags = isset($tax_input[$taxonomy]) ? $tax_input[$taxonomy] : array();
+                wp_set_post_terms( $post_ID, $tags, $taxonomy );
</ins><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         $current_guid = get_post_field( 'guid', $post_ID );
</span><span class="lines">@@ -2265,7 +2271,7 @@
</span><span class="cx"> 
</span><span class="cx">         wp_transition_post_status($data['post_status'], $previous_status, $post);
</span><span class="cx"> 
</span><del>-        if ( $update)
</del><ins>+        if ( $update )
</ins><span class="cx">                 do_action('edit_post', $post_ID, $post);
</span><span class="cx"> 
</span><span class="cx">         do_action('save_post', $post_ID, $post);
</span><span class="lines">@@ -2320,7 +2326,7 @@
</span><span class="cx">                 $postarr['post_date_gmt'] = '';
</span><span class="cx">         }
</span><span class="cx"> 
</span><del>-        if ($postarr['post_type'] == 'attachment')
</del><ins>+        if ( $postarr['post_type'] == 'attachment' )
</ins><span class="cx">                 return wp_insert_attachment($postarr);
</span><span class="cx"> 
</span><span class="cx">         return wp_insert_post($postarr);
</span></span></pre>
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