public ActionResult Create(SourceViewModel viewModel)
        {
            if (!ModelState.IsValid)
            {
                viewModel.Categories = _dbContext.Categories.ToList();
                return(View("Create", viewModel));
            }
            var s      = new Source();
            var source = new Source()
            {
                LectrurerId = User.Identity.GetUserId(),
                Datetime    = viewModel.GetDateTime(),
                CategoryId  = viewModel.Category,
                Place       = viewModel.Place
            };

            _dbContext.Courses.Add(source);
            _dbContext.SaveChanges();

            return(RedirectToAction("index", "Home"));
        }