public function LanguageValidator::validate

Checks if the passed value is valid.

@api

Parameters

mixed $value The value that should be validated:

Constraint $constraint The constraint for the validation:

Overrides ConstraintValidatorInterface::validate

File

drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Constraints/LanguageValidator.php, line 31

Class

LanguageValidator

Validates whether a value is a valid language code

Namespace

Code

public function validate($value, Constraint $constraint) {
  if (null === $value || '' === $value) {
    return;
  }
  if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
    throw new UnexpectedTypeException($value, 'string');
  }
  $value = (string) $value;
  $languages = Intl::getLanguageBundle()
    ->getLanguageNames();
  if (!isset($languages[$value])) {
    $this->context
      ->addViolation($constraint->message, array(
      '{{ value }}' => $value,
    ));
  }
}