get_id(); $item->set_props( array( 'discount' => get_metadata( 'order_item', $id, 'discount_amount', true ), 'discount_tax' => get_metadata( 'order_item', $id, 'discount_amount_tax', true ), ) ); $item->set_object_read( true ); } /** * Saves an item's data to the database / item meta. * Ran after both create and update, so $item->get_id() will be set. * * @since 3.0.0 * @param WC_Order_Item_Coupon $item Coupon order item. */ public function save_item_data( &$item ) { $id = $item->get_id(); $save_values = array( 'discount_amount' => $item->get_discount( 'edit' ), 'discount_amount_tax' => $item->get_discount_tax( 'edit' ), ); foreach ( $save_values as $key => $value ) { update_metadata( 'order_item', $id, $key, $value ); } } }