public ActionResult UpdateBus(string busId, int capacity, string license, string state, string status)
 {
     DatabaseInterface db = new DatabaseInterface();
     if (!db.IsLicenseUnique(license, busId))
         return Json("false");
     Bus bus = db.GetBusByBusId(int.Parse(busId));
     bus.LicensePlate = license;
     bus.BusId = int.Parse(busId);
     BusStatus busStatus;
     if (status.Equals("0"))
     {
         busStatus = BusStatus.Active;
     }
     else
     {
         busStatus = BusStatus.Inactive;
     }
     bus.Status = busStatus;
     bus.Capacity = capacity;
     bus.State = state;
     db.UpdateBus(bus);
     return Json("true");
 }