Symfony序列化器：不建议使用setCircularReferenceHandler（）

Question

Symfony's (FrameworkBundle v4.2.5) serializer component (v4.2.5) now tells me in the logs:

php.INFO: User Deprecated: The "Symfony\Component\Serializer\Normalizer\AbstractNormalizer::setCircularReferenceHandler()" method is deprecated since Symfony 4.2, use the "circular_reference_handler" key of the context instead. 

But the thing is, I don't call this method explicitly. This call is actually triggered by the SymfonyFrameworkBundle.

I have this in my framework.yaml:

serializer:
  enabled: true
  circular_reference_handler: Cbp\Utils\CircularReferenceHandler

And I see this in the FrameworkExtension (which is provided by the FrameworkBundle):

    if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
        $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', [new Reference($config['circular_reference_handler'])]);
    }

So my question is: how do I fix this deprecation notice?

Answer 1

It turns out to be a bug in the documentation and the FrameworkExtension.

The bug report can be found here .