// POST: api/UserTender
        public void Post([FromBody]UserTenderModel value)
        {
            var user = _userService.GetUserById(value.UserId);
            var tender = _tenderService.GetTenderById(value.TenderId);

            var userTender = Mapper.Map<UserTenderModel, UserTender>(value);

            userTender.User = user;
            userTender.Tender = tender;

            _userTenderService.CreateUserTender(userTender);
            _userTenderService.SaveUserTender();
        }
        // PUT: api/UserTender/5
        public void Put(int id, [FromBody]UserTenderModel value)
        {
            var userTender = _userTenderService.GetUserTenderById(id);
            var user = _userService.GetUserById(value.UserId);
            var tender = _tenderService.GetTenderById(value.TenderId);

            Mapper.Map(value, userTender);

            userTender.User = user;
            userTender.Tender = tender;

            _userTenderService.UpdateUserTender(userTender);
            _userTenderService.SaveUserTender();
        }