Created
June 30, 2020 19:43
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inlining children of a self-referencing to an IRI in API Platform
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| <?php | |
| namespace App\Serializer\Normalizer; | |
| use App\Entity\CheeseListing; | |
| use Symfony\Component\Serializer\Normalizer\CacheableSupportsMethodInterface; | |
| use Symfony\Component\Serializer\Normalizer\ContextAwareNormalizerInterface; | |
| use Symfony\Component\Serializer\Normalizer\NormalizerAwareInterface; | |
| use Symfony\Component\Serializer\Normalizer\NormalizerAwareTrait; | |
| class CheeseNormalizer implements ContextAwareNormalizerInterface, CacheableSupportsMethodInterface, NormalizerAwareInterface | |
| { | |
| use NormalizerAwareTrait; | |
| private const ALREADY_CALLED = 'USER_NORMALIZER_ALREADY_CALLED'; | |
| public function normalize($object, $format = null, array $context = array()) | |
| { | |
| $context[self::ALREADY_CALLED] = true; | |
| // set the groups to nothing so that no data is serialized from | |
| // the child object | |
| $context['groups'] = []; | |
| // not sure why this is needed. This is normally added | |
| // by the JSON-LD ObjectNormalizer, but that doesn't seem to | |
| // be used... and the logic here is quite hard to follow. | |
| // so, I added it myself - it's the flag that converting to an | |
| // IRI is ok | |
| $context['api_empty_resource_as_iri'] = true; | |
| $data = $this->normalizer->normalize($object, $format, $context); | |
| $context[self::ALREADY_CALLED] = false; | |
| return $data; | |
| } | |
| public function supportsNormalization($data, $format = null, array $context = []) | |
| { | |
| // avoid recursion: only call once per object | |
| if (isset($context[self::ALREADY_CALLED])) { | |
| return false; | |
| } | |
| // api_attribute is a context key set to the property being normalized | |
| return $data instanceof CheeseListing | |
| && isset($context['api_attribute']) | |
| && in_array($context['api_attribute'], ['parentCheese', 'childCheeses']); | |
| } | |
| public function hasCacheableSupportsMethod(): bool | |
| { | |
| return false; | |
| } | |
| } |
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Here's a different solution a user posted - https://gist.github.com/voltel/ac2820fc7f97892999162774452a97fa
Reference: https://symfonycasts.com/screencast/api-platform/relations-iri#comment-5391015233
Thanks to @voltel :)