public ActionResult Save(Movie movie)
        {
            //validate form fields
            if (!ModelState.IsValid)
            {
                var viewModel = new MoviewFormViewModel(movie)
                {
                    Genres = _context.Genres.ToList()
                };

                return(View("MovieForm", viewModel));
            }


            if (movie.Id == 0)
            {
                movie.DateAdded = DateTime.Now;
                _context.Movies.Add(movie);
            }
            else
            {
                var movieInDB = _context.Movies.Single(m => m.Id == movie.Id);

                movieInDB.Name          = movie.Name;
                movieInDB.GenreId       = movie.GenreId;
                movieInDB.ReleaseDate   = movie.ReleaseDate;
                movieInDB.NumberInStock = movie.NumberInStock;
            }

            _context.SaveChanges();


            return(RedirectToAction("Index", "Movies"));
        }
        public ActionResult New()
        {
            var genres = _context.Genres.ToList();

            var viewModel = new MoviewFormViewModel
            {
                Genres = genres
            };

            return(View("MovieForm", viewModel));
        }
        public ActionResult Edit(int id)
        {
            var movie = _context.Movies.SingleOrDefault(m => m.Id == id);

            if (movie == null)
            {
                return(HttpNotFound());
            }

            var viewModel = new MoviewFormViewModel(movie)
            {
                Genres = _context.Genres.ToList()
            };

            return(View("MovieForm", viewModel));
        }