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<title>[29045] trunk: WP_Comment_Query: Add fields => 'ids' query var.</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/29045">29045</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2014-07-09 18:15:42 +0000 (Wed, 09 Jul 2014)</dd>
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<h3>Log Message</h3>
<pre>WP_Comment_Query: Add fields => 'ids' query var.

props mordauk.
fixes <a href="http://core.trac.wordpress.org/ticket/28434">#28434</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludescommentphp">trunk/src/wp-includes/comment.php</a></li>
<li><a href="#trunktestsphpunittestscommentqueryphp">trunk/tests/phpunit/tests/comment/query.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludescommentphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/comment.php (29044 => 29045)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/comment.php        2014-07-09 18:06:54 UTC (rev 29044)
+++ trunk/src/wp-includes/comment.php   2014-07-09 18:15:42 UTC (rev 29045)
</span><span class="lines">@@ -245,6 +245,7 @@
</span><span class="cx"> 
</span><span class="cx">          $defaults = array(
</span><span class="cx">                  'author_email' => '',
</span><ins>+                       'fields' => '',
</ins><span class="cx">                   'ID' => '',
</span><span class="cx">                  'karma' => '',
</span><span class="cx">                  'number' => '',
</span><span class="lines">@@ -368,8 +369,16 @@
</span><span class="cx">          if ( $this->query_vars['count'] ) {
</span><span class="cx">                  $fields = 'COUNT(*)';
</span><span class="cx">          } else {
</span><del>-                       $fields = '*';
</del><ins>+                        switch ( strtolower( $this->query_vars['fields'] ) ) {
+                               case 'ids':
+                                       $fields = "$wpdb->comments.comment_ID";
+                                       break;
+                               default:
+                                       $fields = "*";
+                                       break;
+                       }
</ins><span class="cx">           }
</span><ins>+
</ins><span class="cx">           $join = '';
</span><span class="cx">          $where = $approved;
</span><span class="cx"> 
</span><span class="lines">@@ -460,6 +469,12 @@
</span><span class="cx">          if ( $this->query_vars['count'] ) {
</span><span class="cx">                  return $wpdb->get_var( $query );
</span><span class="cx">          }
</span><ins>+
+               if ( 'ids' == $this->query_vars['fields'] ) {
+                       $this->comments = $wpdb->get_col( $query );
+                       return array_map( 'intval', $this->comments );
+               }
+
</ins><span class="cx">           $results = $wpdb->get_results( $query );
</span><span class="cx">          /**
</span><span class="cx">           * Filter the comment query results.
</span></span></pre></div>
<a id="trunktestsphpunittestscommentqueryphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/tests/comment/query.php (29044 => 29045)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/comment/query.php      2014-07-09 18:06:54 UTC (rev 29044)
+++ trunk/tests/phpunit/tests/comment/query.php 2014-07-09 18:15:42 UTC (rev 29045)
</span><span class="lines">@@ -180,4 +180,22 @@
</span><span class="cx">          $this->assertEquals( $users[1], $comments[2]->user_id );
</span><span class="cx"> 
</span><span class="cx">  }
</span><ins>+
+       /**
+        * @ticket 28434
+        */
+       function test_fields_ids_query() {
+               $comment_1 = $this->factory->comment->create( array( 'comment_post_ID' => $this->post_id, 'user_id' => 7, 'comment_approved' => '1' ) );
+               $comment_2 = $this->factory->comment->create( array( 'comment_post_ID' => $this->post_id, 'user_id' => 1, 'comment_approved' => '1' ) );
+               $comment_3 = $this->factory->comment->create( array( 'comment_post_ID' => $this->post_id, 'user_id' => 1, 'comment_approved' => '1' ) );
+
+               // Ensure we are dealing with integers, and not objects.
+               $this->assertInternalType( 'integer', $comment_1 );
+               $this->assertInternalType( 'integer', $comment_2 );
+               $this->assertInternalType( 'integer', $comment_3 );
+
+               $comment_ids = get_comments( array( 'fields' => 'ids' ) );
+               $this->assertCount( 3, $comment_ids );
+               $this->assertEquals( array( $comment_1, $comment_2, $comment_3 ), $comment_ids );
+       }
</ins><span class="cx"> }
</span></span></pre>
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