public ActionResult AddNewRating(Rating model)
        {
            ViewBag.AlreadyExists = false;
            ViewBag.AllSchools    = new SelectList(School.GetAll(), "Id", "Name");
            if (ModelState.IsValid)
            {
                if (model.Id != 0)
                {
                    bool IsUpdated = Rating.Update(model.Id, model.SchoolId, model.RateValue, model.Description);
                    if (IsUpdated)
                    {
                        return(RedirectToAction("Index"));
                    }
                }
                else
                {
                    bool isAdded = Rating.AddNew(model.SchoolId, model.RateValue, model.Description, ApplicationHelper.LoggedUserId);
                    if (isAdded)
                    {
                        return(RedirectToAction("Index"));
                    }
                }

                ViewBag.AlreadyExists = true;
                return(View(model));
            }
            else
            {
                return(View(model));
            }
        }