/**
  * Display the specified resource.
  *
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function show($slug, ActivitiesRepo $repo)
 {
     $activity = $repo->getBySlug($slug);
     if (!$activity) {
         abort(404);
     }
     // return $activity;
     return view('activities.show', compact('activity'));
 }