/**
  * Reject Assignment
  *
  * @param         $contract_id
  * @param         $task_id
  * @param Request $request
  * @return Redirect
  */
 public function reject($contract_id, $task_id, Request $request)
 {
     $message = $request->input('message');
     if ($message == '') {
         return redirect()->back()->withError(trans('mturk.action.reject_reason'));
     }
     if ($this->task->rejectTask($contract_id, $task_id, $message)) {
         return redirect()->back()->withSuccess(trans('mturk.action.rejected'));
     }
     return redirect()->back()->withError(trans('mturk.action.reject_fail'));
 }