Yii2中的条件验证

在规则中

public function rules()
{
    return [
       [
          'nonmember_name', 
          'required', 
          'when' => function ($model) { 
              return $model->is_member == 2; 
          }, 
          'whenClient' => "function (attribute, value) { 
              return $('#id').val() == '2'; 
          }"
       ]
    ];
}