/**
  * Update the specified reservation in storage.
  *
  * @param  Reservation  $reservation
  * @return Response
  */
 public function update(Reservation $reservation, UpdateReservationRequest $request)
 {
     $reservation->user()->associate($request->get('user_id'));
     $reservation->resource()->associate($request->get('resource_id'));
     $this->updateTimeFields($reservation, $request);
     $reservation->save();
     return redirect()->route('admin.reservations.index');
 }