From SQL to DQL - php

Question

I want to change this SQL query : (i'm using a bundle)
(Evenement is an entity and evenement_evenement is the result of self-referencing many to many of evenement)
SELECT *
FROM evenement e
natural JOIN evenement_evenement ee
WHERE e.id = ee.evenement_source
AND e.id = 3
Into DQL. For now I have this :
public function findAllEventAssociateByEvent($idEvent){
$qb = $this->createQueryBuilder('e');
$qb->add('select', 'e');
$qb->from('Bundle:Evenement', 'e2');
$qb->where('e = :evenement');
$qb->andWhere('e2 in e.evenements');
$qb->setParameter('evenement', $idEvent);
return $qb;
//select * from evenement e NATURAL join evenement_evenement ee where e.id = ee.evenement_source and e.id = $idEvent
}
And i have this :
$eventAssocies = $em->getRepository('Bundle:Evenement')->findAllEventAssociateByEvent($id)->getQuery()->getResult();
But it's not working, i have an error in my "andWhere", but I don't know why...

Answer 1

I think you misunderstood some stuff, I reckon you query should more look like this:
public function findAllEventAssociateByEvent($idEvent){
$qb = $this->createQueryBuilder('e')
->join('e.evenement_evenement', 'e2')
->where('e = :evenement')
->setParameter('evenement', $idEvent);
return $qb;
}
The join will do what you were trying to do with your AndWhere I reckon

Answer 2

You cannot use andWhere like that, you have to treat it like you treated your where clause. Declare a parameter, and later on, set it. From what I understand, you'd need to use a subquery for that e.evenements part. Whatever you expect to be in e.evenements part, extract it to a variable, e.g: $evenements and do the following:
$qb->andWhere('e2 IN (:evenements)')
->setParameter('evenements', $evenements, Doctrine\DBAL\Connection::PARAM_INT_ARRAY);
Assuming $evenements is an array. If it's a string, you can explode() it for example.
If you are looking for a quick solution, try this:
$qb = $this->createQueryBuilder('e')
->select('e.id')
->where('e.id = :evenement')
->setParameter('evenement', $idEvent);
$evenementsIds = $qb->getQuery()->getResult(); // This will get you an array of ID's
$qb2 = $this->createQueryBuilder('e2')
->where('e2.id IN (:evenements)')
->setParameter('evenements', $evenementsIds, Doctrine\DBAL\Connection::PARAM_INT_ARRAY);
$result = $qb2->getQuery()->getResult();