public IActionResult Save(Movie movie)
        {
            if (ModelState.IsValid)
            {
                if (movie.Id == 0)
                {
                    movie.DateAdded = DateTime.Now;
                    _context.Movies.Add(movie);
                }
                else
                {
                    var existingMovie = _context.Movies.FirstOrDefault(m => m.Id == movie.Id);
                    existingMovie.Name        = movie.Name;
                    existingMovie.GenreId     = movie.GenreId;
                    existingMovie.ReleaseDate = movie.ReleaseDate;
                    existingMovie.Stock       = movie.Stock;
                }

                _context.SaveChanges();

                return(RedirectToAction(nameof(Index)));
            }
            var viewModel = new SaveMovieViewModel(movie)
            {
                Genres = _context.Genres.ToList()
            };

            return(View(viewModel));
        }
        public ActionResult Save()
        {
            var genres = _context.Genres.ToList();

            var model = new SaveMovieViewModel()
            {
                Genres = genres
            };

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

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

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

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