// GET: Cupon/Edit/5
 public ActionResult Edit(int?id)
 {
     if (id != null)
     {
         Cupon cupon = db.Cupon.FirstOrDefault(p => p.id == id);
         if (cupon != null)
         {
             CuponVM model = new CuponVM()
             {
                 Cupon  = cupon,
                 Cupons = db.Cupon.ToList(),
                 Action = "Edit",
                 Button = "Edit",
                 Header = "Edit Cupon"
             };
             return(View("Index", model));
         }
         else
         {
             return(HttpNotFound());
         }
     }
     else
     {
         return(RedirectToAction("Index"));
     }
 }
        // GET: Cupon
        public ActionResult Index()
        {
            CuponVM model = new CuponVM()
            {
                Cupon  = new Cupon(),
                Cupons = db.Cupon.ToList(),
                Action = "Create",
                Button = "Add",
                Header = "Add Cupon"
            };

            return(View(model));
        }