Добавление удаление купона в корзине (D7) - amel-post/bitrix.help GitHub Wiki

\Bitrix\Sale\DiscountCouponsManager::init();
\Bitrix\Sale\DiscountCouponsManager::add($coupon);
//\Bitrix\Sale\DiscountCouponsManager::delete($coupon);

$basket = \Bitrix\Sale\Basket::loadItemsForFUser(
    \Bitrix\Sale\Fuser::getId(),
    \Bitrix\Main\Context::getCurrent()->getSite()
);
$discounts = \Bitrix\Sale\Discount::loadByBasket($basket);

$basket->refreshData(array('PRICE', 'COUPONS'));
$discounts->calculate();
$discountResult = $discounts->getApplyResult();

$basket->save();