Fix term_exists() for parent = 0.
Passing a 0 (or '0') as the 'parent' param of term_exists() should limit results to terms with no parent. Adds unit test. Fixes #29851. git-svn-id: https://develop.svn.wordpress.org/trunk@29863 602fd350-edb4-49c9-b593-d223f7449a82
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@ -1655,12 +1655,12 @@ function get_terms( $taxonomies, $args = '' ) {
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*
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* @param int|string $term The term to check
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* @param string $taxonomy The taxonomy name to use
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* @param int $parent ID of parent term under which to confine the exists search.
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* @param int $parent Optional. ID of parent term under which to confine the exists search.
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* @return mixed Returns 0 if the term does not exist. Returns the term ID if no taxonomy is specified
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* and the term ID exists. Returns an array of the term ID and the term taxonomy ID
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* if the taxonomy is specified and the pairing exists.
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*/
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function term_exists($term, $taxonomy = '', $parent = 0) {
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function term_exists( $term, $taxonomy = '', $parent = null ) {
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global $wpdb;
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$select = "SELECT term_id FROM $wpdb->terms as t WHERE ";
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@ -1686,8 +1686,8 @@ function term_exists($term, $taxonomy = '', $parent = 0) {
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$where_fields = array($slug);
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$else_where_fields = array($term);
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if ( !empty($taxonomy) ) {
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$parent = (int) $parent;
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if ( $parent > 0 ) {
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if ( is_numeric( $parent ) ) {
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$parent = (int) $parent;
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$where_fields[] = $parent;
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$else_where_fields[] = $parent;
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$where .= ' AND tt.parent = %d';
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@ -138,6 +138,31 @@ class Tests_Term extends WP_UnitTestCase {
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$this->assertEquals( $t, $found['term_id'] );
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}
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/**
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* @ticket 29851
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*/
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public function test_term_exists_taxonomy_nonempty_parent_0_should_return_false_for_child_term() {
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register_taxonomy( 'foo', 'post', array(
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'hierarchical' => true,
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) );
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$parent_term = $this->factory->term->create( array(
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'taxonomy' => 'foo',
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) );
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$t = $this->factory->term->create( array(
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'taxonomy' => 'foo',
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'parent' => $parent_term,
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'slug' => 'child-term',
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) );
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$found = term_exists( 'child-term', 'foo', 0 );
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_unregister_taxonomy( 'foo' );
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$this->assertSame( null, $found['term_id'] );
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}
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public function test_term_exists_taxonomy_nonempty_parent_nonempty_match_name() {
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register_taxonomy( 'foo', 'post', array(
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'hierarchical' => true,
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