From 2baea18102b49999a3fbd821c8c7a0d37e08cfd0 Mon Sep 17 00:00:00 2001 From: Jeff Stieler Date: Fri, 9 Oct 2015 16:31:52 -0600 Subject: [PATCH] Cache coupon id from code lookup in a transient. --- includes/class-wc-coupon.php | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/includes/class-wc-coupon.php b/includes/class-wc-coupon.php index f8180584656..98283ecf899 100644 --- a/includes/class-wc-coupon.php +++ b/includes/class-wc-coupon.php @@ -145,7 +145,15 @@ class WC_Coupon { private function get_coupon_id_from_code( $code ) { global $wpdb; - return absint( $wpdb->get_var( $wpdb->prepare( apply_filters( 'woocommerce_coupon_code_query', "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type = 'shop_coupon' AND post_status = 'publish'" ), $this->code ) ) ); + $coupon_code_query = $wpdb->prepare( apply_filters( 'woocommerce_coupon_code_query', "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type = 'shop_coupon' AND post_status = 'publish'" ), $this->code ); + $transient_name = 'wc_cid_by_code_' . md5( $coupon_code_query . WC_Cache_Helper::get_transient_version( 'coupons' ) ); + + if ( false === ( $result = get_transient( $transient_name ) ) ) { + $result = $wpdb->get_var( $coupon_code_query ); + set_transient( $transient_name, $result, DAY_IN_SECONDS * 30 ); + } + + return absint( $result ); } /**