Ticket #36687: 36687.3.diff

src/wp-includes/query.php

@@ -3574 +3574 @@
                  */
                 $this->posts = apply_filters_ref_array( 'posts_pre_query', array( null, &$this ) );
 
-                if ( 'ids' == $q['fields'] ) {
-                        if ( null === $this->posts ) {
-                                $this->posts = $wpdb->get_col( $this->request );
-                        }
-
-                        $this->posts = array_map( 'intval', $this->posts );
-                        $this->post_count = count( $this->posts );
-                        $this->set_found_posts( $q, $limits );
-
-                        return $this->posts;
-                }
-
                 if ( 'id=>parent' == $q['fields'] ) {
                         if ( null === $this->posts ) {
                                 $this->posts = $wpdb->get_results( $this->request );
@@ -3606 +3594 @@
                 }
 
                 if ( null === $this->posts ) {
-                        $split_the_query = ( $old_request == $this->request && "$wpdb->posts.*" == $fields && !empty( $limits ) && $q['posts_per_page'] < 500 );
+                        $split_the_query = ( 'ids' == $q['fields'] || ( $old_request == $this->request && "$wpdb->posts.*" == $fields && ! empty( $limits ) && $q['posts_per_page'] < 500 ) );
 
                         /**
                          * Filters whether to split the query.
@@ -3641 +3629 @@
 
                                 if ( $ids ) {
                                         $this->posts = $ids;
-                                        $this->set_found_posts( $q, $limits );
-                                        _prime_post_caches( $ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
+                                        if ( 'all' == $q['fields'] ) {
+                                                _prime_post_caches( $ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
+                                        }
                                 } else {
                                         $this->posts = array();
                                 }
                         } else {
                                 $this->posts = $wpdb->get_results( $this->request );
-                                $this->set_found_posts( $q, $limits );
                         }
                 }
 
-                // Convert to WP_Post objects.
+                // Convert to WP_Post objects and set the found-post totals.
                 if ( $this->posts ) {
-                        $this->posts = array_map( 'get_post', $this->posts );
+                        if ( 'ids' == $q['fields'] ) {
+                                $this->posts = array_map( 'intval', $this->posts );
+                        } else {
+                                $this->posts = array_map( 'get_post', $this->posts );
+                        }
+                        $this->set_found_posts( $q, $limits );
                 }
 
                 if ( ! $q['suppress_filters'] ) {
@@ -3669 +3662 @@
                         $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
                 }
 
+
+                if ( 'ids' == $q['fields'] ) {
+                        $this->post_count = count( $this->posts );
+                        return $this->posts;
+                }
+
                 if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
                         /** This filter is documented in wp-includes/query.php */
                         $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );