<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
/**
* Validates whether a value is a valid language code
* @author Bernhard Schussek <bernhard.schussek@symfony.com>
class LanguageValidator extends ConstraintValidator
{
public function isValid($value, Constraint $constraint)
if (null === $value || '' === $value) {
return true;
}
if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString()'))) {
throw new UnexpectedTypeException($value, 'string');
$value = (string)$value;
if (!in_array($value, \Symfony\Component\Locale\Locale::getLanguages())) {
$this->setMessage($constraint->message, array('{{ value }}' => $value));
return false;