initUseMode

void public static
\Bitrix\Sale\DiscountCouponsManager::initUseMode(
 integer $mode = self::MODE_CLIENT,
 array $params = array()
);

Method sets coupon handling mode and user ID. Static method.

Parameter	Description	Version
$mode	Coupon mode.
$params	Array with original parameters. Keys are case-sensistive: userId - owner order ID (only for modes `MODE_MANAGER` or `MODE_ORDER`); orderId - order ID, required for coupon mode with order existing coupons (only for the mode `MODE_ORDER`); oldUserId - old order owner, if customer was updated in the edit form (only for modes `MODE_MANAGER` or `MODE_ORDER`).