Resources are not supported in serialized data MongoDB JMSSerializer

Question

Im trying to develop an API (based on DoctrineMongoDBBundle and FOSRestBundle) that stores all the hole data in MongoDB, recovers it, and shows it using FOSRest.

When I try to show a list of objects stored in database this is what i'm getting:

"message": "Resources are not supported in serialized data. Path: Monolog\Handler\StreamHandler -> Symfony\Bridge\Monolog\Logger -> Doctrine\Bundle\MongoDBBundle\Logger\Logger -> Doctrine\Bundle\MongoDBBundle\Logger\AggregateLogger -> Doctrine\ODM\MongoDB\Configuration -> Doctrine\MongoDB\Connection -> Doctrine\ODM\MongoDB\LoggableCursor", "class": "JMS\Serializer\Exception\RuntimeException",

My config.yml for FOS is this:

fos_rest:
    param_fetcher_listener: true
    body_listener: true
    format_listener: true
    view:
        view_response_listener: force

And that's my controller:

/**
 * @Route("/services.{_format}", defaults={"_format" = "json"})
 * @REST\View()
 */
public function getServicesAction($_format){
    $services = $this->get('doctrine_mongodb')->getManager()
        ->getRepository('RadmasOpen010Bundle:Service')
        ->findAll();

    return $services;
}

I tried to return a well formed Array, and no error were displayed, as well as if I join all the Service objects into an Array.

I tried to solve it installing Mongo PHP extension with PECL, changing some configs, but nothing has changed.

Anyone knows what cound be happening?

Answer 1

If you want to get a colection of RadmasOpen010Bundle:Service documents, you MUST call the method "toArray" after calling find method from repository or getQuery method from query builder

/**
 * @Route("/services.{_format}", defaults={"_format" = "json"})
 * @REST\View()
 */
public function getServicesAction($_format){
    $services = $this->get('doctrine_mongodb')->getManager()
        ->getRepository('RadmasOpen010Bundle:Service')
        ->findAll()->toArray();

    return $services;
}

also you can call array_values($services) for correct serialization of exclude strategy