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Optimize users query in member directory

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champsupertramp
2016-04-27 23:14:54 +08:00
parent c4a195e4bc
commit f7dd02d3f4
1 changed files with 59 additions and 1 deletions
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core/um-members.php
+59 -1
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@@ -140,15 +140,21 @@ class UM_Members {
***/
function get_members($args){
global $ultimatemember, $wpdb;
global $ultimatemember, $wpdb, $post;
extract($args);
$query_args = array();
$query_args = apply_filters( 'um_prepare_user_query_args', $query_args, $args );
// Prepare for BIG SELECT query
$wpdb->query('SET SQL_BIG_SELECTS=1');
// Add filter to optimize BIG Select with multiple LEFT JOINs
add_filter( 'pre_user_query', array( $this, 'um_optimize_member_query' ) );
$users = new WP_User_Query( $query_args );
remove_filter( 'pre_user_query', array( $this, 'um_optimize_member_query' ) );
// number of profiles for mobile
if ( $ultimatemember->mobile->isMobile() && isset( $profiles_per_page_mobile ) )
@@ -251,4 +257,56 @@ class UM_Members {
return apply_filters('um_prepare_user_results_array', $array );
}
/**
* Optimizes Member directory with multiple LEFT JOINs
* @param object $vars
* @return object $var
*/
public function um_optimize_member_query( $vars ) {
global $wpdb;
$arr_where = explode("\n", $vars->query_where );
$arr_left_join = explode("LEFT JOIN", $vars->query_from );
$arr_user_photo_key = array('synced_profile_photo','profile_photo','synced_gravatar_hashed_id');
foreach ( $arr_where as $where ) {
foreach( $arr_user_photo_key as $key ){
if( strpos( $where , "'".$key."'" ) > -1 ){
// find usermeta key
preg_match("#mt[0-9]+.#", $where, $meta_key );
// remove period from found meta_key
$meta_key = str_replace(".","", current( $meta_key ) );
// remove matched LEFT JOIN clause
$vars->query_from = str_replace('LEFT JOIN wp_usermeta AS '.$meta_key.' ON ( wp_users.ID = '.$meta_key.'.user_id )', '', $vars->query_from );
// prepare EXISTS replacement for LEFT JOIN clauses
$where_exists = 'um_exist EXISTS( SELECT '.$wpdb->usermeta.'.umeta_id FROM '.$wpdb->usermeta.' WHERE '.$wpdb->usermeta.'.user_id = '.$wpdb->users.'.ID AND '.$wpdb->usermeta.'.meta_key IN("'.implode('","', $arr_user_photo_key ).'") AND '.$wpdb->usermeta.'.meta_value != "" )';
// Replace LEFT JOIN clauses with EXISTS and remove duplicates
if( strpos( $vars->query_where, 'um_exist' ) === FALSE ){
$vars->query_where = str_replace( $where , $where_exists, $vars->query_where );
}else{
$vars->query_where = str_replace( $where , '1=0', $vars->query_where );
}
}
}
}
$vars->query_where = str_replace("\n", "", $vars->query_where );
$vars->query_where = str_replace("um_exist", "", $vars->query_where );
return $vars;
}
}