LukePOLO\LaraCart\LaraCart::removeCouponFromItems PHP Метод

    private function removeCouponFromItems($code = null)
    {
        foreach ($this->getItems() as $item) {
            if (isset($item->code) && (empty($code) || $item->code == $code)) {
                $item->code = null;
                $item->discount = null;
                $item->couponInfo = [];
            }
        }
    }