Golang IOrder.ApplyCoupon Examples

Example #1

File: order_manager.go Project: yonglehou/go2o

// 应用优惠券
func (this *orderManagerImpl) applyCoupon(m member.IMember, order order.IOrder,
	py payment.IPaymentOrder, couponCode string) error {
	po := py.GetValue()
	cp := this._promRep.GetCouponByCode(
		m.GetAggregateRootId(), couponCode)
	// 如果优惠券不存在
	if cp == nil {
		return errors.New("优惠券无效")
	}
	// 获取优惠券
	coupon := cp.(promotion.ICouponPromotion)
	result, err := coupon.CanUse(m, po.TotalFee)
	if result {
		if coupon.CanTake() {
			_, err = coupon.GetTake(m.GetAggregateRootId())
			//如果未占用，则占用
			if err != nil {
				err = coupon.Take(m.GetAggregateRootId())
			}
		} else {
			_, err = coupon.GetBind(m.GetAggregateRootId())
		}
		if err != nil {
			domain.HandleError(err, "domain")
			err = errors.New("优惠券无效")
		} else {
			//应用优惠券
			if err = order.ApplyCoupon(coupon); err == nil {
				_, err = py.CouponDiscount(coupon)
			}
		}
	}
	return err
}