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<title>[17490] branches/3.1/wp-includes/query.php:
  Reparse the taxonomy query if query vars change.</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/17490">17490</a></dd>
<dt>Author</dt> <dd>markjaquith</dd>
<dt>Date</dt> <dd>2011-03-02 04:10:53 +0000 (Wed, 02 Mar 2011)</dd>
</dl>

<h3>Log Message</h3>
<pre>Reparse the taxonomy query if query vars change. fixes <a href="http://trac.wordpress.org/ticket/16622">#16622</a> for 3.1</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches31wpincludesqueryphp">branches/3.1/wp-includes/query.php</a></li>
</ul>

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<div id="patch">
<h3>Diff</h3>
<a id="branches31wpincludesqueryphp"></a>
<div class="modfile"><h4>Modified: branches/3.1/wp-includes/query.php (17489 => 17490)</h4>
<pre class="diff"><span>
<span class="info">--- branches/3.1/wp-includes/query.php        2011-03-02 04:10:21 UTC (rev 17489)
+++ branches/3.1/wp-includes/query.php        2011-03-02 04:10:53 UTC (rev 17490)
</span><span class="lines">@@ -1231,13 +1231,13 @@
</span><span class="cx">         var $is_post_type_archive = false;
</span><span class="cx"> 
</span><span class="cx">         /**
</span><del>-         * Whether the tax query has been parsed once.
</del><ins>+         * Stores the -&gt;query_vars state like md5(serialize( $this-&gt;query_vars ) ) so we know
+         * whether we have to re-parse because something has changed
</ins><span class="cx">          *
</span><span class="cx">          * @since 3.1.0
</span><span class="cx">          * @access private
</span><del>-         * @var bool
</del><span class="cx">          */
</span><del>-        var $parsed_tax_query = false;
</del><ins>+        var $query_vars_hash = false;
</ins><span class="cx"> 
</span><span class="cx">         /**
</span><span class="cx">          * Resets query flags to false.
</span><span class="lines">@@ -1496,7 +1496,7 @@
</span><span class="cx">                                 $this-&gt;is_date = true;
</span><span class="cx">                         }
</span><span class="cx"> 
</span><del>-                        $this-&gt;parsed_tax_query = false;
</del><ins>+                        $this-&gt;query_vars_hash = false;
</ins><span class="cx">                         $this-&gt;parse_tax_query( $qv );
</span><span class="cx"> 
</span><span class="cx">                         foreach ( $this-&gt;tax_query-&gt;queries as $tax_query ) {
</span><span class="lines">@@ -1682,7 +1682,7 @@
</span><span class="cx">                 }
</span><span class="cx"> 
</span><span class="cx">                 // Category stuff
</span><del>-                if ( !empty($q['cat']) &amp;&amp; '0' != $q['cat'] &amp;&amp; !$this-&gt;is_singular &amp;&amp; !$this-&gt;parsed_tax_query ) {
</del><ins>+                if ( !empty($q['cat']) &amp;&amp; '0' != $q['cat'] &amp;&amp; !$this-&gt;is_singular &amp;&amp; md5(serialize( $this-&gt;query_vars ) ) != $this-&gt;query_vars_hash ) {
</ins><span class="cx">                         $q['cat'] = ''.urldecode($q['cat']).'';
</span><span class="cx">                         $q['cat'] = addslashes_gpc($q['cat']);
</span><span class="cx">                         $cat_array = preg_split('/[,\s]+/', $q['cat']);
</span><span class="lines">@@ -1736,7 +1736,7 @@
</span><span class="cx">                 }
</span><span class="cx"> 
</span><span class="cx">                 // Tag stuff
</span><del>-                if ( '' != $q['tag'] &amp;&amp; !$this-&gt;is_singular &amp;&amp; !$this-&gt;parsed_tax_query ) {
</del><ins>+                if ( '' != $q['tag'] &amp;&amp; !$this-&gt;is_singular &amp;&amp; md5(serialize( $this-&gt;query_vars ) ) != $this-&gt;query_vars_hash ) {
</ins><span class="cx">                         if ( strpos($q['tag'], ',') !== false ) {
</span><span class="cx">                                 $tags = preg_split('/[,\s]+/', $q['tag']);
</span><span class="cx">                                 foreach ( (array) $tags as $tag ) {
</span><span class="lines">@@ -1808,7 +1808,7 @@
</span><span class="cx">                         );
</span><span class="cx">                 }
</span><span class="cx"> 
</span><del>-                $this-&gt;parsed_tax_query = true;
</del><ins>+                $this-&gt;query_vars_hash = md5(serialize( $this-&gt;query_vars ) );
</ins><span class="cx"> 
</span><span class="cx">                 $this-&gt;tax_query = new WP_Tax_Query( $tax_query );
</span><span class="cx">         }
</span></span></pre>
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