/**
  * @param Request     $request
  * @param UserService $user
  * @return View
  */
 public function activity(Request $request, UserService $user)
 {
     $filter = $request->only('contract', 'user');
     $activities = $this->activity->getAll($filter);
     $users = $user->getList();
     $contracts = $this->task->getContractsList();
     return view('mturk.activity', compact('activities', 'users', 'contracts'));
 }