core-bundle/src/Resources/contao/library/Contao/Message.php
public static function hasError($strScope=TL_MODE)
	{
		$session = System::getContainer()->get('session');

		if (!$session->isStarted())
		{
			return false;
		}

		return $session->getFlashBag()->has(static::getFlashBagKey('error', $strScope));
	}
public static function hasError($strScope=TL_MODE)
	{
		$session = System::getContainer()->get('session');

		if (!$session->isStarted())
		{
			return false;
		}

		return $session->getFlashBag()->has(static::getFlashBagKey('error', $strScope));
	}
public static function hasError ( $ strScope = TL_MODE ) { $ session = System :: getContainer ( ) -> get ( 'session' ) ; if ( ! $ session -> isStarted ( ) ) { return false ; } return $ session -> getFlashBag ( ) -> has ( static :: getFlashBagKey ( 'error' , $ strScope ) ) ; }
Check if there are error messages

@param string $strScope An optional message scope

@return boolean True if there are error messages
Check if there are error messages