public function update(TournamentRequest $request, Tournament $tournaments)
 {
     foreach ($request->all()['data']['attributes'] as $key => $value) {
         if (isset($tournaments->{$key})) {
             $tournaments->{$key} = $value;
         }
     }
     // fetch location
     $location = Location::findOrFail($request->all()['data']['relationships']['location']['data']['id']);
     $tournaments->location_id = $location->id;
     $tournaments->save();
     $resource = new Item($tournaments, new TournamentTransformer(), 'tournaments');
     return $this->fractal()->createData($resource)->toJson();
 }