序列化doctrine2实体

Question

I have the following entities: Event :hasOne: User :hasHone: Group

I want to render an array (like the getArrayResult() method, but with the linked entities, so here what I've done:

// build query
$em = $this->getServiceLocator()->get('Doctrine\ORM\EntityManager');

$query = $em->createQueryBuilder()
    ->select('evt, usr')
    ->from('Application\Model\Event', 'evt')
    ->join('Application\Model\User', 'usr')
    ->where('evt.userId in (:uid)')
    ->setParameter('uid', $usersId);

if (null !== $from) {
    $query->andWhere('TRUNC(evt.litteralDate) > TO_DATE(:from, \'yyyy-mm-dd\')')
        ->setParameter('from', $from);
}

if (null !== $to) {
    $query->andWhere('TRUNC(evt.litteralDate) < TO_DATE(:to, \'yyyy-mm-dd\')')
        ->setParameter('to', $to);
}


$events = $query->getQuery()->getArrayResult();

The problem is that getArrayResult() flattent all my selected data so I have users and events on the same level, how can I achieve something like this:

{
    "events": [
        {
            "id": 1677,
            "userId": 2,
            "type": "T",
            "date": {
                "date": "2013-03-05 00:00:00",
                "timezone_type": 3,
                "timezone": "Europe/Paris"
            },
            "litteralDate": "05-MAR-13",
            "piquet": true,
            "when": "passe",
            "description": "Jour Travaille",
            "user" : {
                "id" : 2,
                "login" : "myUserName",
                "name" : "MY user name"
            }
        },
}

Answer 1

If you want to fetch-join one entity inside another you need to ask for the main entity and the ones you want to join in your select clause. Read here on how to fetch-join in dql .

Right now you reference the entity class for Application\\Model\\User in your join clause, you should reference the association between the event entity and the user entity instead.

So lets say you are in your repository for your event entity Application\\Model\\Event (for which you use short notation evt ) and you want to join an entity Application\\Model\\User that is associated to the event entity in a property user . Then you need to write the join clause like this:

$query = $this->createQueryBuilder('evt') 
              ->select('evt', 'usr') 
              ->leftJoin('evt.user', 'usr')

              ...other parts of the query

              ->getQuery();

$array = $query->getResult(Query::HYDRATE_ARRAY)

Since you are in the Repository for the Application\\Model\\Event entity you don't need your FROM clause at all (you can skip that), since by default the created QueryBuilder will use that entity by default for $this repository.

Another tip:

I think for extracting your result you should refer to the DoctrineObject hydrator .

You can extract objects both by value and by reference. You can read on how to do that here .