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I had a hard time finding how to add custom field to admin search under woocommerce > members list. The woocommerce membership plugin is in fact using the ‘posts_clauses’ filter to filter the search result. So to add custom fields, here is the code I use :
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function advanced_admin_custom_search($pieces, WP_Query $wp_query) { global $wpdb; if (!is_admin() ) return $pieces; if (!array_key_exists('post_type', $wp_query->query)) return $pieces; // bail out if not the correct post type if ( 'wc_user_membership' === $wp_query->query['post_type'] ) { // $wp_query->set( 'post_type', 'wc_user_membership' ); // search if ( isset( $wp_query->query['s'] ) ) { // add here your acf fields $list_searcheable_acf = array("my_acf_field_name"); // get search expression $terms = $wp_query->query_vars[ 's' ]; // explode search expression to get search terms $exploded = explode( ' ', $terms ); if( $exploded === FALSE || count( $exploded ) == 0 ) $exploded = array( 0 => $terms ); // reset search in order to rebuilt it as we whish $where = $pieces['where']; foreach( $exploded as $tag ) : $where .= " OR EXISTS ( SELECT * FROM " . $wpdb->postmeta . " WHERE post_id = " . $wpdb->posts . ".ID AND " . $wpdb->posts . ".post_type = 'wc_user_membership' AND ("; foreach ($list_searcheable_acf as $searcheable_acf) : $where .= " (meta_key LIKE '%" . $searcheable_acf . "%' AND meta_value REGEXP '[[:<:]]{$tag}[[:>:]]') "; endforeach; $where .= ") )"; endforeach; // replace the where clauses $pieces['where'] = $where; } } return $pieces; } add_filter( 'posts_clauses', 'advanced_admin_custom_search', 500, 2 ); |