Как валидировать поля в зависимости от выбора check box Yii2?

$model = Payment::find()->where(['user_id' => $id])->one();
            $model->pre_auth_payment = "$28.25";
            $model->scenario = "credit_card_form";

            if ($model->load(Yii::$app->request->post()) && $model->validate()) {

                if($model->pre_auth_payment == 0)
                    $model->scenario = "credit_card_form";
                else
                    $model->scenario = "bank_account_form";
                $model->save();

               return $this->redirect(['update', 'id' => $model->user_id, 'step'=> 3]);
            } else {
                return $this->render('update', [
                    'model' => $model,
                    'step'=>$step
                ]);
            }

[['user_id', 'payment_method', 'credit_card_number', 'credit_card_expr', 'credit_card_cvv', 'credit_card_info','type_pay'], 'required', 'when' => function($model) {
                return $model->type_pay == 0;
            }],
            [[ 'pre_auth_payment', 'day_month', 'transit_number', 'institution_id', 'account_num'], 'required',  'when' => function($model) {
                return $model->type_pay == 1;
            }],
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