yii2에서 반복적인 양식 제출을 방지하는 방법

'components' => [
	'request' => [
		'enableCsrfCookie' => false
	]
]

/**
* @inheritdoc
*/
public function beforeAction($action)
{
	if (parent::beforeAction($action)) {
		if ($this->enableCsrfValidation && Yii::$app->getErrorHandler()->exception === null && !Yii::$app->getRequest()->validateCsrfToken()) {
			throw new BadRequestHttpException(Yii::t('yii', 'Unable to verify your data submission.'));
		}
		return true;
	}
 
	return false;
}