public ActionResult Create(PostingBoardViewModel viewModel)
        {
            if (!ModelState.IsValid)
            {
                viewModel.Genres = _context.Genres.ToList();
                return(View("Create", viewModel));
            }

            var artistId = User.Identity.GetUserId();

            var artist = _context.Users.Single(u => u.Id == artistId);
            var genre  = _context.Genres.Single(g => g.Id == viewModel.Genre);

            var gid = new Gig
            {
                Artist   = artist,
                DateTime = viewModel.GetDateTime(),
                Genre    = genre,
                Venue    = viewModel.Venue
            };

            _context.Gigs.Add(gid);
            _context.SaveChanges();

            return(RedirectToAction("Index", "Home"));
        }
        public ActionResult Create()
        {
            var viewModel = new PostingBoardViewModel
            {
                Genres = _context.Genres.ToList()
            };

            return(View(viewModel));
        }