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- <?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;
- use Symfony\Component\Validator\Exception\UnexpectedValueException;
- /**
- * @author Yevgeniy Zholkevskiy <zhenya.zholkevskiy@gmail.com>
- */
- class UniqueValidator extends ConstraintValidator
- {
- /**
- * {@inheritdoc}
- */
- public function validate($value, Constraint $constraint)
- {
- if (!$constraint instanceof Unique) {
- throw new UnexpectedTypeException($constraint, Unique::class);
- }
- if (null === $value) {
- return;
- }
- if (!\is_array($value) && !$value instanceof \IteratorAggregate) {
- throw new UnexpectedValueException($value, 'array|IteratorAggregate');
- }
- $collectionElements = [];
- foreach ($value as $element) {
- if (\in_array($element, $collectionElements, true)) {
- $this->context->buildViolation($constraint->message)
- ->setParameter('{{ value }}', $this->formatValue($value))
- ->setCode(Unique::IS_NOT_UNIQUE)
- ->addViolation();
- return;
- }
- $collectionElements[] = $element;
- }
- }
- }
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