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Introduce WP_Meta_Query and relation support. Props scribu, greuben. fixes #17165 #17011

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git-svn-id: https://develop.svn.wordpress.org/trunk@17699 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Ryan Boren
2011-04-25 17:27:35 +00:00
parent c4d025eb56
commit 96fe89727e
3 changed files with 186 additions and 115 deletions
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31
wp-includes/query.php
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@@ -848,6 +848,15 @@ class WP_Query {
*/
var $tax_query;
/**
* Metadata query container
*
* @since 3.2
* @access public
* @var object WP_Meta_Query
*/
var $meta_query = false;
/**
* Holds the data for a single object that is queried.
*
@@ -1525,8 +1534,6 @@ class WP_Query {
}
unset( $tax_query );
_parse_meta_query( $qv );
if ( empty($qv['author']) || ($qv['author'] == '0') ) {
$this->is_author = false;
} else {
@@ -1900,6 +1907,10 @@ class WP_Query {
// Fill again in case pre_get_posts unset some vars.
$q = $this->fill_query_vars($q);
// Parse meta query
$this->meta_query = new WP_Meta_Query();
$this->meta_query->parse_query_vars( $q );
// Set a flag if a pre_get_posts hook changed the query vars.
$hash = md5( serialize( $this->query_vars ) );
if ( $hash != $this->query_vars_hash ) {
@@ -2235,7 +2246,7 @@ class WP_Query {
}
}
if ( !empty( $this->tax_query->queries ) || !empty( $q['meta_key'] ) ) {
if ( !empty( $this->tax_query->queries ) || !empty( $this->meta_query->queries ) ) {
$groupby = "{$wpdb->posts}.ID";
}
@@ -2468,18 +2479,8 @@ class WP_Query {
$where .= ')';
}
// Parse the meta query again if query vars have changed.
if ( $this->query_vars_changed ) {
$meta_query_hash = md5( serialize( $q['meta_query'] ) );
$_meta_query = $q['meta_query'];
unset( $q['meta_query'] );
_parse_meta_query( $q );
if ( md5( serialize( $q['meta_query'] ) ) != $meta_query_hash && is_array( $_meta_query ) )
$q['meta_query'] = array_merge( $_meta_query, $q['meta_query'] );
}
if ( !empty( $q['meta_query'] ) ) {
$clauses = call_user_func_array( '_get_meta_sql', array( $q['meta_query'], 'post', $wpdb->posts, 'ID', &$this) );
if ( !empty( $this->meta_query->queries ) ) {
$clauses = $this->meta_query->get_sql( 'post', $wpdb->posts, 'ID', $this );
$join .= $clauses['join'];
$where .= $clauses['where'];
}