From 89382ae3130367f93f49ebf4a21ea9578d7fad01 Mon Sep 17 00:00:00 2001
From: scribu <scribu@git.wordpress.org>
Date: Fri, 17 Sep 2010 16:08:35 +0000
Subject: [PATCH] Allow plugins to manipulate the meta query args. See #14645

git-svn-id: https://develop.svn.wordpress.org/trunk@15624 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/query.php | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/wp-includes/query.php b/wp-includes/query.php
index db1deef561..99d43a1a7a 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -670,6 +670,15 @@ class WP_Query {
 	 */
 	var $tax_query = array();
 
+	/**
+	 * Metadata query
+	 *
+	 * @since 3.1.0
+	 * @access public
+	 * @var array
+	 */
+	var $meta_query = array();
+
 	/**
 	 * Holds the data for a single object that is queried.
 	 *
@@ -1363,6 +1372,10 @@ class WP_Query {
 				$this->is_tax = true;
 			}
 
+			$meta_query = wp_array_slice_assoc( $qv, array( 'meta_key', 'meta_value', 'meta_compare' ) );
+			if ( !empty( $meta_query ) )
+				$this->meta_query[] = $meta_query;
+
 			if ( empty($qv['author']) || ($qv['author'] == '0') ) {
 				$this->is_author = false;
 			} else {
@@ -2166,9 +2179,7 @@ class WP_Query {
 			$where .= ')';
 		}
 
-		// postmeta queries
-		$meta_query = wp_array_slice_assoc( $q, array( 'meta_key', 'meta_value', 'meta_compare' ) );
-		list( $meta_join, $meta_where ) = _wp_meta_sql( array( $meta_query ), $wpdb->posts, 'ID', $wpdb->postmeta, 'post_id' );
+		list( $meta_join, $meta_where ) = _wp_meta_sql( $this->meta_query, $wpdb->posts, 'ID', $wpdb->postmeta, 'post_id' );
 		$join .= $meta_join;
 		$where .= $meta_where;