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<?php |
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/* |
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* This file is part of AppBundle the package. |
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* |
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* (c) Ruslan Muriev <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace RonteLtd\JsonApiBundle\Serializer\Normalizer; |
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use RonteLtd\JsonApiBundle\Serializer\Exception\LogicException; |
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use RonteLtd\JsonApiBundle\Serializer\Mapping\Factory\MetadataFactoryInterface; |
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use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface; |
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use Symfony\Component\Serializer\NameConverter\NameConverterInterface; |
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use Symfony\Component\Serializer\Normalizer\AbstractNormalizer; |
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use Symfony\Component\Serializer\Normalizer\NormalizerInterface; |
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/** |
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* Class CollectionNormalizer |
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* |
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* @package RonteLtd\JsonApiBundle\Serializer\Normalizer |
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* @author Ruslan Muriev <[email protected]> |
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*/ |
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class CollectionNormalizer extends AbstractNormalizer |
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{ |
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/** |
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* ObjectNormalizer constructor. |
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* |
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* @param MetadataFactoryInterface $metadataFactory |
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* @param ClassMetadataFactoryInterface|null $classMetadataFactory |
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* @param NameConverterInterface|null $nameConverter |
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*/ |
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public function __construct(MetadataFactoryInterface $metadataFactory, ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null) |
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{ |
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parent::__construct($classMetadataFactory, $nameConverter); |
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$this->metadataFactory = $metadataFactory; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsNormalization($data, $format = null) |
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{ |
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return ($data instanceof Collection); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function normalize($collection, $format = null, array $context = array()) |
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{ |
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if (!$collection instanceof Collection) { |
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return $collection; |
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} |
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if (!empty($collection->getJsonapi())) { |
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$jsonApiData['jsonapi'] = $collection->getJsonapi(); |
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} |
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if (!empty($collection->getLinks())) { |
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$jsonApiData['links'] = $collection->getLinks(); |
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} |
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if (!empty($collection->getMeta())) { |
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$jsonApiData['meta'] = $collection->getMeta(); |
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} |
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// $jsonApiData['included'] = []; TODO implement |
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foreach ($collection as $item) { |
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if ($this->serializer instanceof NormalizerInterface) { |
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$jsonApiData['data'][] = $this->serializer->normalize($item); |
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} |
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} |
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return $jsonApiData; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsDenormalization($data, $type, $format = null) |
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{ |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function denormalize($data, $class, $format = null, array $context = array()) |
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{ |
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throw new LogicException(sprintf('Cannot denormalize with "%s".', \JsonSerializable::class)); |
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} |
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} |
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.