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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\Serializer\Normalizer;
- trait ObjectToPopulateTrait
- {
- /**
- * Extract the `object_to_populate` field from the context if it exists
- * and is an instance of the provided $class.
- *
- * @param string $class The class the object should be
- * @param string|null $key They in which to look for the object to populate.
- * Keeps backwards compatibility with `AbstractNormalizer`.
- *
- * @return object|null an object if things check out, null otherwise
- */
- protected function extractObjectToPopulate(string $class, array $context, string $key = null): ?object
- {
- $key = $key ?? AbstractNormalizer::OBJECT_TO_POPULATE;
- if (isset($context[$key]) && \is_object($context[$key]) && $context[$key] instanceof $class) {
- return $context[$key];
- }
- return null;
- }
- }
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