Disable Doctrine 2 lazy loading when using JMS Serializer?

Question

Im using Doctrine 2 ORM in my Zend project and need to serialize my Entities to JSON in several cases.

ATM i use the Querybuilder and join all tables i need. But my

Answer 1

Case you want pragmatically use your or default subscriber,

@DavidLin answer:

you can copy the class from JMS\Serializer\EventDispatcher\Subscriber\DoctrineProxySubscriber to Your\Bundle\Event\DoctrineProxySubscriber and comment out the $object->__load(); line

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namespace Your\Bundle\Event;

use Doctrine\ORM\PersistentCollection;
use Doctrine\ODM\MongoDB\PersistentCollection as MongoDBPersistentCollection;
use Doctrine\ODM\PHPCR\PersistentCollection as PHPCRPersistentCollection;
use Doctrine\Common\Persistence\Proxy;
use Doctrine\ORM\Proxy\Proxy as ORMProxy;
use JMS\Serializer\EventDispatcher\PreSerializeEvent;
use JMS\Serializer\EventDispatcher\EventSubscriberInterface;

class AvoidDoctrineProxySubscriber implements EventSubscriberInterface
{
    public function onPreSerialize(PreSerializeEvent $event)
    {
        $object = $event->getObject();
        $type = $event->getType();

        // If the set type name is not an actual class, but a faked type for which a custom handler exists, we do not
        // modify it with this subscriber. Also, we forgo autoloading here as an instance of this type is already created,
        // so it must be loaded if its a real class.
        $virtualType = ! class_exists($type['name'], false);

        if ($object instanceof PersistentCollection
            || $object instanceof MongoDBPersistentCollection
            || $object instanceof PHPCRPersistentCollection
        ) {
            if ( ! $virtualType) {
                $event->setType('ArrayCollection');
            }

            return;
        }

        if ( ! $object instanceof Proxy && ! $object instanceof ORMProxy) {
            return;
        }


        //Avoiding doctrine lazy load proxyes
        //$object->__load();

        if ( ! $virtualType) {
            $event->setType(get_parent_class($object));
        }
    }

    public static function getSubscribedEvents()
    {
        return array(
            array('event' => 'serializer.pre_serialize', 'method' => 'onPreSerialize'),
        );
    }
}

And initialize the serialize like this:

$serializer = JMS\Serializer\SerializerBuilder::create()
    //remove this to use lazy loading 
    ->configureListeners(function(JMS\Serializer\EventDispatcher\EventDispatcher $dispatcher) {
        $dispatcher->addSubscriber(new Your\Bundle\Event\AvoidDoctrineProxySubscriber());
    })  
    // !remove this to use lazy loading 
    ->build();

//and serialize the data with/without Lazy

serializer->serialize($data, 'json');