public function destroy($id, User $user)
 {
     $stop = Stop::find($id);
     $log = new Log();
     $log->user_id = $user->id;
     $log->log = "删除车站" . print_r($stop->toArray(), true);
     $log->save();
     Stop::destroy($id);
     return redirect()->action('StopController@index');
 }