Symfony 4 serialize entity wihout relations

Question

I\'ve have to log changes of each entities. I\'ve Listener which listen for doctrine\'s events on preRemove, postUpdate and postDelete. My enity AccessModule has relations:<

Answer 1

Tested in Symfony 4.1, here is the documentation that actually works https://symfony.com/blog/new-in-symfony-2-7-serialization-groups

Robert's explanation https://stackoverflow.com/a/48756847/579646 is missing the $classMetadataFactory in order to work. Here is my code:

    $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
    $encoders = [new JsonEncoder()];
    $normalizer = new ObjectNormalizer($classMetadataFactory);
    $normalizer->setCircularReferenceLimit(2);
    // Add Circular reference handler
    $normalizer->setCircularReferenceHandler(function ($object) {
        return $object->getId();
    });
    $normalizers = [$normalizer];
    $serializer = new Serializer($normalizers, $encoders);
    $jsonContent = $serializer->serialize($jobs, 'json', array('groups' => ['default']));

    return JsonResponse::fromJsonString($jsonContent);