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<title>[41037] trunk: Taxonomy: Avoid duplicates when querying for terms in taxonomies registered with `$args` parameter.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/41037">41037</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/41037","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>boonebgorges</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-07-13 13:40:39 +0000 (Thu, 13 Jul 2017)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Taxonomy: Avoid duplicates when querying for terms in taxonomies registered with `$args` parameter.
<a href="https://core.trac.wordpress.org/changeset/40514">[40514]</a> introduced a bug that caused term queries to return some duplicates
when the `$taxonomies` array contained only taxonomies that were originally
registered with an `$args` array. We fix this bug by ensuring that
recursive `get_terms()` queries stop when all queried `$taxonomies` have
already been referenced.
Props bor0, atanasangelovdev.
Fixes <a href="https://core.trac.wordpress.org/ticket/41010">#41010</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludestaxonomyphp">trunk/src/wp-includes/taxonomy.php</a></li>
<li><a href="#trunktestsphpunitteststermwpGetObjectTermsphp">trunk/tests/phpunit/tests/term/wpGetObjectTerms.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunksrcwpincludestaxonomyphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/taxonomy.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/taxonomy.php 2017-07-13 12:07:56 UTC (rev 41036)
+++ trunk/src/wp-includes/taxonomy.php 2017-07-13 13:40:39 UTC (rev 41037)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1917,7 +1917,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $args['taxonomy'] = $taxonomies;
</span><span class="cx" style="display: block; padding: 0 10px"> $args['object_ids'] = $object_ids;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $terms = array_merge( $terms, get_terms( $args ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Taxonomies registered without an 'args' param are handled here.
+ if ( ! empty( $taxonomies ) ) {
+ $terms = array_merge( $terms, get_terms( $args ) );
+ }
</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"> * Filters the terms for a given object or objects.
</span></span></pre></div>
<a id="trunktestsphpunitteststermwpGetObjectTermsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/term/wpGetObjectTerms.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/term/wpGetObjectTerms.php 2017-07-13 12:07:56 UTC (rev 41036)
+++ trunk/tests/phpunit/tests/term/wpGetObjectTerms.php 2017-07-13 13:40:39 UTC (rev 41037)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -760,4 +760,40 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $args['orderby'] = 'term_order';
</span><span class="cx" style="display: block; padding: 0 10px"> return $args;
</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 41010
+ */
+ public function test_duplicate_terms_should_not_be_returned_when_passed_multiple_taxonomies_registered_with_args_array() {
+ $taxonomy1 = 'wptests_tax';
+ $taxonomy2 = 'wptests_tax_2';
+
+ // Any non-empty 'args' array triggers the bug.
+ $taxonomy_arguments = array(
+ 'args' => array( 0 ),
+ );
+
+ register_taxonomy( $taxonomy1, 'post', $taxonomy_arguments );
+ register_taxonomy( $taxonomy2, 'post', $taxonomy_arguments );
+
+ $post_id = self::factory()->post->create();
+ $term_1_id = self::factory()->term->create( array(
+ 'taxonomy' => $taxonomy1,
+ ) );
+ $term_2_id = self::factory()->term->create( array(
+ 'taxonomy' => $taxonomy2,
+ ) );
+
+ wp_set_object_terms( $post_id, $term_1_id, $taxonomy1 );
+ wp_set_object_terms( $post_id, $term_2_id, $taxonomy2 );
+
+ $expected = array( $term_1_id, $term_2_id );
+
+ $actual = wp_get_object_terms( $post_id, array( $taxonomy1, $taxonomy2 ), array(
+ 'orderby' => 'term_id',
+ 'fields' => 'ids',
+ ) );
+
+ $this->assertEqualSets( $expected, $actual );
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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