public IActionResult IncludeNewVehicle(IncludeVehicleViewModel input) { if (!ModelState.IsValid) { ViewBag.CarrierId = input.CarrierId; return(View()); } _carriersService.IncludeNewVehicle(input.CarrierId, input.RegNumber); return(Redirect($"/Carriers/Edit?id={input.CarrierId}")); }