public function toursByActivity($activityId, ActivityRepository $activityRepository, TourRepository $tourRepository)
 {
     $activity = $activityRepository->findActivity($activityId);
     $tours = $tourRepository->getToursByActivity($activityId);
     $pageTitle = 'Tours - ' . $activity->activity;
     return view('tours.toursByActivity', compact('pageTitle', 'tours', 'activity'));
 }