How to do a join on two entities in Symfony and Doctrine? - mysql

Question

I have a select query and I'm trying to add a join to it.
In the example below, I have a Questionentity that I use to return some results, and I want to add a join with the User entity, like:
SELECT question FROM question AS q LEFT JOIN USER u ON q.user_id= u.id;
I would like the result to be a User entity inside a Question entity, something like:
private Question (entity)
private id
private user_id
private User (entity)
private id
private name
here is my class
namespace AppBundle\Repository;
use AppBundle\Entity\User;
use AppBundle\Entity\Question;
use Doctrine\ORM\EntityRepository;
use Doctrine\ORM\Tools\Pagination\Paginator;
class QuestionRepository extends EntityRepository
{
/**
* #param int $currentPage
*
* #return Paginator
*/
public function getQuestions($currentPage = 1)
{
$questions = $this->createQueryBuilder('question')
->where('question.active is NULL')
->getQuery();
$paginator = $this->paginate($questions, $currentPage);
return $paginator;
}
}
I call it like this
$questionRepo = $this->container->get('doctrine')->getManager()->getRepository('AppBundle:Question');
$questions = $questionRepo->getQuestions(1);
Any ideas?

Answer 1

How about that:
$questions = $this->createQueryBuilder('question')
->leftJoin('question.user', 'question_user', 'WITH', 'question_user.user = :user_id')
->where('question.active is NULL')
->setParameter('user_id', $user_id)
->getQuery();
$paginator = $this->paginate($questions, $currentPage);
Edit: Because of your latest comments, i have to mention, that this suggestion is assuming that your Question entity looks like this (according User's entity:
/**
* #ORM\ManyToOne(targetEntity="AppBundle\Entity\User", inversedBy="question")
* #ORM\JoinColumn(name="user_id", referencedColumnName="id")
*/
private $user;
If not, add this, generate entities (php app/console doctrine:generate:entities AppBundle:Question) and update DB (php app/console doctrine:schema:update --force).
PS: Before generating entities, you'll have to remove old getters/setters.