public ActionResult Edit(int id, CourseRatingEdit model) { if (!ModelState.IsValid) { return(View(model)); } if (model.CourseRatingId != id) { ModelState.AddModelError("", "Id Mismatch"); return(View(model)); } var userId = Guid.Parse(User.Identity.GetUserId()); var service = new CourseRatingService(userId); if (service.EditRating(model)) { TempData["SaveResult"] = "Your rating was updated."; return(RedirectToAction("Index")); } ModelState.AddModelError("", "Your rating could not be updated"); return(View()); }