Tweak WP_Query

Author: spacedmonkey

src/wp-includes/canonical.php

@@ -986,22 +986,8 @@ function redirect_guess_404_permalink() {
 		if ( $strict_guess ) {
 			$query_args['name'] = get_query_var( 'name' );
 		} else {
-			// For loose matching (LIKE), we'll use a posts_where filter.
-			$post_name_for_filter = get_query_var( 'name' );
-
-			// Store the filter callback so we can remove it later.
-			$post_name_where_filter = static function ( $where, $query ) use ( $post_name_for_filter, $wpdb ) {
-				// Only apply to our specific query.
-				if ( isset( $query->query_vars['redirect_guess_404'] ) ) {
-					$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_name LIKE %s", $wpdb->esc_like( $post_name_for_filter ) . '%' );
-				}
-				return $where;
-			};
-
-			add_filter( 'posts_where', $post_name_where_filter, 10, 2 );
-
-			// Mark this query so our filter knows to apply the LIKE clause.
-			$query_args['redirect_guess_404'] = true;
+			$query_args['s']              = get_query_var( 's' );
+			$query_args['search_columns'] = array( 'post_name' );
 		}
 
 		// If any of post_type, year, monthnum, or day are set, use them to refine the query.

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

@@ -774,7 +774,7 @@ public function fill_query_vars( $query_vars ) {
 	 *                                                   character used for exclusion can be modified using the
 	 *                                                   the 'wp_query_search_exclusion_prefix' filter.
 	 *     @type string[]        $search_columns         Array of column names to be searched. Accepts 'post_title',
-	 *                                                   'post_excerpt' and 'post_content'. Default empty array.
+	 *                                                   'post_excerpt', 'post_content' and 'post_name'. Default empty array.
 	 *     @type int             $second                 Second of the minute. Default empty. Accepts numbers 0-59.
 	 *     @type bool            $sentence               Whether to search by phrase. Default false.
 	 *     @type bool            $suppress_filters       Whether to suppress filters. Default false.
@@ -1452,8 +1452,10 @@ protected function parse_search( &$query_vars ) {
 		$searchand                          = '';
 		$query_vars['search_orderby_title'] = array();
 
-		$default_search_columns = array( 'post_title', 'post_excerpt', 'post_content' );
-		$search_columns         = ! empty( $query_vars['search_columns'] ) ? $query_vars['search_columns'] : $default_search_columns;
+		$default_search_columns   = array( 'post_title', 'post_excerpt', 'post_content' );
+		$allowed_search_columns   = $default_search_columns;
+		$allowed_search_columns[] = 'post_name';
+		$search_columns           = ! empty( $query_vars['search_columns'] ) ? $query_vars['search_columns'] : $default_search_columns;
 		if ( ! is_array( $search_columns ) ) {
 			$search_columns = array( $search_columns );
 		}
@@ -1473,7 +1475,7 @@ protected function parse_search( &$query_vars ) {
 		$search_columns = (array) apply_filters( 'post_search_columns', $search_columns, $query_vars['s'], $this );
 
 		// Use only supported search columns.
-		$search_columns = array_intersect( $search_columns, $default_search_columns );
+		$search_columns = array_intersect( $search_columns, $allowed_search_columns );
 		if ( empty( $search_columns ) ) {
 			$search_columns = $default_search_columns;
 		}