public ActionResult Create(int id, CreateOrderViewModel viewModel)
        {
            var entity = viewModel.ToEntity(id);
            var result = _service.Create(entity);

            if (result.Success)
            {
                return RedirectToAction("details", result.Entity.Id);
            }

            ModelState.AddModelErrorsFromServiceResult(result);

            return View(viewModel);
        }
        public ActionResult Create(int id)
        {
            var viewModel = new CreateOrderViewModel(id);

            return View(viewModel);
        }