Changeset 40918 for trunk/src/wp-includes/class-wp-tax-query.php

Timestamp:

06/21/2017 03:56:25 AM (8 years ago)

Author:

boonebgorges

Message:

Use WP_Term_Query when transforming tax queries.

This change allows tax query transformations to be cached.

Props spacedmonkey.
Fixes #37038.

File:

• trunk/src/wp-includes/class-wp-tax-query.php (modified) (3 diffs)

trunk/src/wp-includes/class-wp-tax-query.php

@@ -596 +596 @@
      * Transforms a single query, from one field to another.
      *
+     * Operates on the `$query` object by reference. In the case of error,
+     * `$query` is converted to a WP_Error object.
+     *
      * @since 3.2.0
      *
@@ -605 +608 @@
      */
     public function transform_query( &$query, $resulting_field ) {
-        global $wpdb;
-
         if ( empty( $query['terms'] ) )
             return;
@@ -615 +616 @@
         $resulting_field = sanitize_key( $resulting_field );
 
+        // Empty 'terms' always results in a null transformation.
+        $terms = array_filter( $query['terms'] );
+        if ( empty( $terms ) ) {
+            $query['terms'] = array();
+            $query['field'] = $resulting_field;
+            return;
+        }
+
+        $args = array(
+            'get'                    => 'all',
+            'number'                 => 0,
+            'taxonomy'               => $query['taxonomy'],
+            'update_term_meta_cache' => false,
+            'orderby'                => 'none',
+        );
+
+        // Term query parameter name depends on the 'field' being searched on.
         switch ( $query['field'] ) {
             case 'slug':
+                $args['slug'] = $terms;
+                break;
             case 'name':
-                foreach ( $query['terms'] as &$term ) {
-                    /*
-                     * 0 is the $term_id parameter. We don't have a term ID yet, but it doesn't
-                     * matter because `sanitize_term_field()` ignores the $term_id param when the
-                     * context is 'db'.
-                     */
-                    $clean_term = sanitize_term_field( $query['field'], $term, 0, $query['taxonomy'], 'db' );
-
-                    // Match sanitization in wp_insert_term().
-                    $clean_term = wp_unslash( $clean_term );
-
-                    $term = "'" . esc_sql( $clean_term ) . "'";
-                }
-
-                $terms = implode( ",", $query['terms'] );
-
-                $terms = $wpdb->get_col( "
-                    SELECT $wpdb->term_taxonomy.$resulting_field
-                    FROM $wpdb->term_taxonomy
-                    INNER JOIN $wpdb->terms USING (term_id)
-                    WHERE taxonomy = '{$query['taxonomy']}'
-                    AND $wpdb->terms.{$query['field']} IN ($terms)
-                " );
+                $args['name'] = $terms;
                 break;
             case 'term_taxonomy_id':
-                $terms = implode( ',', array_map( 'intval', $query['terms'] ) );
-                $terms = $wpdb->get_col( "
-                    SELECT $resulting_field
-                    FROM $wpdb->term_taxonomy
-                    WHERE term_taxonomy_id IN ($terms)
-                " );
+                $args['term_taxonomy_id'] = $terms;
                 break;
             default:
-                $terms = implode( ',', array_map( 'intval', $query['terms'] ) );
-                $terms = $wpdb->get_col( "
-                    SELECT $resulting_field
-                    FROM $wpdb->term_taxonomy
-                    WHERE taxonomy = '{$query['taxonomy']}'
-                    AND term_id IN ($terms)
-                " );
-        }
-
-        if ( 'AND' == $query['operator'] && count( $terms ) < count( $query['terms'] ) ) {
+                $args['include'] = wp_parse_id_list( $terms );
+                break;
+        }
+
+        $term_query = new WP_Term_Query();
+        $term_list  = $term_query->query( $args );
+
+        if ( is_wp_error( $term_list ) ) {
+            $query = $term_list;
+            return;
+        }
+
+        if ( 'AND' == $query['operator'] && count( $term_list ) < count( $query['terms'] ) ) {
             $query = new WP_Error( 'inexistent_terms', __( 'Inexistent terms.' ) );
             return;
         }
 
-        $query['terms'] = $terms;
+        $query['terms'] = wp_list_pluck( $term_list, $resulting_field );
         $query['field'] = $resulting_field;
     }