Question

I know conditional filters aren’t yet available for queries (as per “26.1.4. Applying Filter Rules to any Query” in the Known Limitations section of the Doctrine2 manual) , so I wanted to ask the experts what their preferred solution to the following problem is:

My site has product objects that each have many reviews. The reviews have a status field. I don’t want to unnecessarily pull in reviews that haven’t been approved during the automatic association that Doctrine2 does so wonderfully.

My current solution/hack is to use single table inheritance (STI) with a discriminator for “status” and have an ApprovedProductReview extending the ProductReview class based on a status of “APPROVED”

I should add that I am currently simply calling

$em->find('Entities\Product', $pid);

to get my product, and Doctrine2 does all the associations automatically. Should I instead be instantiating a product by providing a DQL query?

What I’d really like is a way to override the magic that Doctrine2 provides based on the annotations, and simply be able to use DQL to lazily get the correct subset of reviews.

Suggestions?

Answer 1

You can use the WITH statement in DQL:

$dql = "SELECT p, r
        FROM Entities\Product p
        LEFT JOIN p.reviews r WITH r.status = :status
        WHERE p.id = :id"

$q = $em->createQuery($dql);
$q->setParameter('id', $id);
$q->setParameter('status', $status);
$product = $q->getSingleResult();