public IActionResult Create(PlatformCreateViewModel viewModel)
        {
            Platform platform = new Platform
            {
                ID             = viewModel.Platform.ID,
                Name           = viewModel.Platform.Name,
                PlatformTypeID = viewModel.Platform.PlatformTypeID ?? null
            };

            platformService.Insert(platform);
            return(RedirectToAction("Index"));
        }
        public IActionResult Create()
        {
            PlatformCreateViewModel viewModel = new PlatformCreateViewModel();

            viewModel.Platform      = new Platform();
            viewModel.PlatformTypes = platformTypeService.GetAll().Select(x => new SelectListItem()
            {
                Text  = x.Name,
                Value = x.ID.ToString()
            }).ToList();

            return(View(viewModel));
        }