How to make redirect with request has ajax laravel

I have the following driver:

public function store(HolRegRequest $request, RecHoliday $reghol)
{
  $reghol->save();
  if ($request->has('ajax_submit')) {
     $response = ['message' => trans('messages.holext') . ' ' . 
     trans('messages.added'), 'status' => 'success'];
    return response()->json($response, 200, array('Access-Controll-Allow- 
    Origin' => '*'));
  }
  return redirect()->back()->withSuccess(trans('messages.holext') . ' ' . 
  trans('messages.added'));

} I would like one of the two things to happen:  when submit from the view, the serial field will have a random code again, since when submitting, it is saved in bd and the form is left blank  or that when doing submit redirects me to the homepage