/**
* Performs ajax validation.
* @param AccountForm $model
* @throws \yii\base\ExitException
*/
protected function performAjaxValidation($model)
{
if (Yii::$app->request->isAjax && $model->load(Yii::$app->request->post())) {
Yii::$app->response->format = Response::FORMAT_JSON;
echo json_encode(ActiveForm::validate($model));
Yii::$app->end();
}
}
