public object Order(string username, int dishId)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            Order order = new Order {
                Date= DateTime.Now,
                State = 0,
                UserName=username,
                DishId=dishId
            };

            db.Order.Add(order);
           int result = db.SaveChanges();
            if(result > 0)
            {
                return new { Response = true };
            }
            return new { Response = false };
        }
        public IHttpActionResult EditOrder(int id, Order order)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != order.Id)
            {
                return BadRequest();
            }

            db.Entry(order).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!OrderExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }