public IActionResult Edit( string title, DateTime releaseDate, string description, bool preorder) { DateTime modifiedReleaseDate = releaseDate; if (releaseDate == null) { modifiedReleaseDate = DateTime.Today; } var movie = new Movie { Title = title, ReleaseDate = modifiedReleaseDate, Description = description, Preorder = preorder }; TryValidateModel(movie); if (ModelState.IsValid) { _context.Movie.Add(movie); _context.SaveChanges(); return(RedirectToAction("Index", "Home")); } else { return(HttpBadRequest(ModelState)); } }