public ActionResult Rate(RetreatRatingCreate model) { if (!ModelState.IsValid) { return(View(model)); } var service = new RatingService(Guid.Parse(User.Identity.GetUserId())); if (service.CreateRetreatRating(model)) { TempData["SaveResult"] = "Your retreat was created."; return(RedirectToAction("Index")); } ; ModelState.AddModelError("", "Retreat could not be created."); return(View(model)); }