如何验证laravel 5.2中的列

Question

在我的用户表中，我有一个角色列，其值为Teacher和Student。如果是用户角色老师，我想插入数据。否则给一条消息＆＃34;仅限老师＆＃34;。 这是我的控制器：

$validator = Validator::make($request->all(), [
                'title' => 'required|exists:users,role==[Teacher]',
                ]);
                if ($validator->fails()) {

                Flash::success('Only for Teacher');
                return redirect(route('works',['class_id'=>$class_id]));
                }else{
                $works = new assainments();
                $works -> title = $text;
                //$works -> file = $fileName;
                $works -> class_id = $class_id;
                $works -> users_id = Auth::user()->id;
                $works -> save();
                Flash::success('Your works has been posted');
                return redirect(route('works',['class_id'=>$class_id]));

但它没有用。它只显示错误消息＆＃34;仅适用于教师＆＃34;

Answer 1

laravel 5.2

exists验证器规则适用于表，列和额外条件。查看更多定义： https://laravel.com/docs/5.2/validation#rule-exists

但你可以通过检查if条件来解决这个问题：

if( \Auth::user()->role == 'Student' )
{
    Flash::success('Only for Teacher');
    return redirect(route('works',['class_id'=>$class_id]));
}