public IQueryable<CouponOwner> GetCouponOwnByCondition(CouponOwnerSearchCondition condition)
 {
     var query = _repository.Table;
     try
     {
         if (condition.userId.HasValue)
         {
             query = query.Where(q => q.UserId == condition.userId);
         }
         if (condition.couponId.HasValue)
         {
             query = query.Where(q => q.CouponId == condition.couponId);
         }
         return query;
     }
     catch (Exception e)
     {
         _log.Error(e, "数据库操作出错");
         return null;
     }
 }
        public HttpResponseMessage couponOwn(int id)
        {
            if (_workContext.CurrentUser == null)
            {
                return PageHelper.toJson(PageHelper.ReturnValue(false, "请先登录优客惠"));
            }

            var couponCategory = _couponCategoryService.GetCouponCategoryById(id);

            //检测是否已经抢过
            var sech = new CouponOwnerSearchCondition
            {
                userId = _workContext.CurrentUser.Id
            };
            var list = _couponOwnerService.GetCouponOwnByCondition(sech).Select(p => p.CouponId).ToArray();
            if (list.Any())
            {
                var sech2 = new CouponSearchCondition
                {
                    CouponCategoryId = id,
                    IdArray = list
                };
                var count = _couponService.GetCouponCount(sech2);
                if (count != 0)
                {
                    return PageHelper.toJson(PageHelper.ReturnValue(false, "您已经抢过这家的优惠券了"));
                }
            }

            var condition = new CouponSearchCondition
            {
                CouponCategoryId = id,
                Status = 0
            };
            var coupon = _couponService.GetCouponByCondition(condition).FirstOrDefault();
            _couponOwnerService.CreateRecord(_workContext.CurrentUser.Id, coupon.Id);
            coupon.Status = EnumCouponStatus.Owned;
            _couponService.Update(coupon);
            couponCategory.Count = couponCategory.Count - 1;
            _couponCategoryService.UpdateCouponCategory(couponCategory);
            var brand = _productBrandService.GetProductBrandById(couponCategory.BrandId);
            var CouponOwn = new CouponCategoryModel
            {
                Name = couponCategory.Name,
                Number = coupon.Number,
                BrandName = brand.Bname
            };
            var model = _brokerService.GetBrokerByUserId(_workContext.CurrentUser.Id);

            //短信发送
            SMSHelper.Sending(model.Phone, "优惠券为:" + brand.Bname + ",券号为:" + coupon.Number + " 【优客惠】");

            return PageHelper.toJson(CouponOwn);
        }