public ActionResult Edit(int id, PlaylistEdit model)
        {
            if (!ModelState.IsValid)
            {
                return(View(model));
            }

            if (model.NewPlaylistID != id)
            {
                ModelState.AddModelError("", "ID Mismatch");
                return(View(model));
            }

            var service = new PlaylistService();

            if (service.EditPlaylist(model))
            {
                TempData["SaveResult"] = "Playlist was updated";
                return(RedirectToAction("Index"));
            }
            ModelState.AddModelError("", "Playlist could not be updated");
            return(View());
        }