public ActionResult Create(Restaurant r)
 {
     if(ModelState.IsValid)
     {
         _db.Restaurants.Add(r);
         _db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View();
 }
 public ActionResult Edit(Restaurant r)
 {
     if (ModelState.IsValid)
     {
         Restaurant original = _db.Restaurants.Find(r.Id);
         original.Name = r.Name;
         original.Description = r.Description;
         original.PriceRange = r.PriceRange;
         _db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View();
 }