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<title>[36004] branches/4.4: Ensure `get_terms()` results are unique when using 'meta_query'.</title>
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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/36004">36004</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/36004","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>boonebgorges</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-12-18 17:48:33 +0000 (Fri, 18 Dec 2015)</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'>Ensure `get_terms()` results are unique when using 'meta_query'.
The introduction of 'meta_query' to `get_terms()` in 4.4 made it possible for
`get_terms()` to erroneously return duplicate results. To address the issue,
we add the `DISTINCT` keyword to the SQL query when a 'meta_query' parameter
has been provided.
Merges <a href="https://core.trac.wordpress.org/changeset/36003">[36003]</a> to the 4.4 branch.
Props @jadpm.
Fixes <a href="https://core.trac.wordpress.org/ticket/35137">#35137</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches44srcwpincludestaxonomyphp">branches/4.4/src/wp-includes/taxonomy.php</a></li>
<li><a href="#branches44testsphpunitteststermgetTermsphp">branches/4.4/tests/phpunit/tests/term/getTerms.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches44">branches/4.4/</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/4.4
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/4.4 2015-12-18 17:43:46 UTC (rev 36003)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/4.4 2015-12-18 17:48:33 UTC (rev 36004)
</ins><a id="branches44"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/4.4</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.1:18031
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.3:20543
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:18512,35802,35823,35825-35826,35829,35832-35834,35837,35839,35850,35931,35933,35944
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,35802,35823,35825-35826,35829,35832-35834,35837,35839,35850,35931,35933,35944,36003
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches44srcwpincludestaxonomyphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.4/src/wp-includes/taxonomy.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.4/src/wp-includes/taxonomy.php 2015-12-18 17:43:46 UTC (rev 36003)
+++ branches/4.4/src/wp-includes/taxonomy.php 2015-12-18 17:48:33 UTC (rev 36004)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1353,12 +1353,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Meta query support.
</span><span class="cx" style="display: block; padding: 0 10px"> $join = '';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $distinct = '';
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( ! empty( $args['meta_query'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $mquery = new WP_Meta_Query( $args['meta_query'] );
</span><span class="cx" style="display: block; padding: 0 10px"> $mq_sql = $mquery->get_sql( 'term', 't', 'term_id' );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $join .= $mq_sql['join'];
</span><span class="cx" style="display: block; padding: 0 10px"> $where .= $mq_sql['where'];
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $distinct .= "DISTINCT";
</ins><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"> $selects = array();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1408,7 +1410,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $join .= " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $pieces = array( 'fields', 'join', 'where', 'distinct', 'orderby', 'order', 'limits' );
</ins><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"> * Filter the terms query SQL clauses.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1424,11 +1426,12 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
</span><span class="cx" style="display: block; padding: 0 10px"> $join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
</span><span class="cx" style="display: block; padding: 0 10px"> $where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : '';
</ins><span class="cx" style="display: block; padding: 0 10px"> $orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
</span><span class="cx" style="display: block; padding: 0 10px"> $order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : '';
</span><span class="cx" style="display: block; padding: 0 10px"> $limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $query = "SELECT $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits";
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $query = "SELECT $distinct $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits";
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // $args can be anything. Only use the args defined in defaults to compute the key.
</span><span class="cx" style="display: block; padding: 0 10px"> $key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $defaults ) ) ) . serialize( $taxonomies ) . $query );
</span></span></pre></div>
<a id="branches44testsphpunitteststermgetTermsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.4/tests/phpunit/tests/term/getTerms.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.4/tests/phpunit/tests/term/getTerms.php 2015-12-18 17:43:46 UTC (rev 36003)
+++ branches/4.4/tests/phpunit/tests/term/getTerms.php 2015-12-18 17:48:33 UTC (rev 36004)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1571,6 +1571,30 @@
</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">+ * @ticket 35137
+ */
+ public function test_meta_query_should_not_return_duplicates() {
+ register_taxonomy( 'wptests_tax', 'post' );
+ $terms = self::factory()->term->create_many( 1, array( 'taxonomy' => 'wptests_tax' ) );
+ add_term_meta( $terms[0], 'foo', 'bar' );
+ add_term_meta( $terms[0], 'foo', 'ber' );
+
+ $found = get_terms( 'wptests_tax', array(
+ 'hide_empty' => false,
+ 'meta_query' => array(
+ array(
+ 'key' => 'foo',
+ 'value' => 'bur',
+ 'compare' => '!=',
+ ),
+ ),
+ 'fields' => 'ids',
+ ) );
+
+ $this->assertEqualSets( array( $terms[0] ), $found );
+ }
+
+ /**
</ins><span class="cx" style="display: block; padding: 0 10px"> * @ticket 14162
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> public function test_should_return_wp_term_objects() {
</span></span></pre>
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