用laravel5做下拉列表,列表内容从数据库读取

gistfile1.txt

放个例子:
视图:{!!Form::select('difficulty', $difficulties)!!}

控制器:
 public function edit($id)
 {
    return view('admin.questions.edit')                                                                                                         
      ->withQuestion(Question::find($id))
      ->withDifficulties(Difficulty::lists('name', 'id'));
 }

关键问题在于这一句:Difficulty::lists('name', 'id')