Multiple join in symfony: Error: Expected =, <, <=, <>, >, >=, != - php

Question

I'm trying to create and action that returns all Variantset for a given PrivateUser. It's a many-to-many relationship, so there's a connection table in between.
This is the query I'm trying to run
$variants = $repository->createQuery('SELECT variants
FROM AppBundle:PrivUser user
JOIN AppBundle:PrivUserVariantset uv
JOIN AppBundle:Variantset variants
WHERE user.iduser=:user_id')
->setParameter('user_id', $userid)
->getResult();
but it returns:
[Syntax Error] line 0, col 146: Error: Expected =, <, <=, <>, >, >=, !=, got 'variants'
If I try the very same query with a single join, getting for instance the number of Variantsets from the PrivUserVariantset table, it does work. It looks like a syntax error, but I don't manage to find it from the examples I have gathered.
Is this the right way to do this query?

Answer 1

I think better way to do this would be:
$variantsRepository = $this->getDoctrine()->getRepository('AppBundle:Variantset');
$qb = $variantsRepository->createQueryBuilder('variants'); //'variants' is just alias, it can be whatever you want
$qb->join('variants.privUsers', 'user')
->where('user.id = :user_id')->setParameter('user_id', $userid)
->getQuery()
->getResult();
Edit:
/** #Entity **/
class Variantset
{
// ...
/**
* #ORM\ManyToMany(targetEntity="PrivUser")
* #ORM\JoinTable(name="Variantset_privUser",
* joinColumns={#ORM\JoinColumn(name="iduser", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="idvariantset", referencedColumnName="id")}
* )
**/
private $privUsers;
// ...
public function __construct() {
$this->privUsers = new \Doctrine\Common\Collections\ArrayCollection();
}
}

Answer 2

Finally I got it to work by changing the columns detailed in the JoinTable annotation: variantid should go on the first joinColumns whereas priv_userid must go on the inverseJoin
Variantset Class:
/**
* #var ArrayCollection
*
* #ORM\ManyToMany(targetEntity="PrivUser")
* #ORM\JoinTable(name="priv_user_variantset",
* joinColumns={#ORM\JoinColumn(name="variantset_varid", referencedColumnName="varid")},
* inverseJoinColumns={#ORM\JoinColumn(name="priv_user_priv_userid", referencedColumnName="priv_userid")}
* )
**/
private $privusers;
// ...
public function __construct() {
$this->privUsers = new \Doctrine\Common\Collections\ArrayCollection();
}
Controller:
$variantsRepository = $this->getDoctrine()->getRepository('AppBundle:Variantset');
$em = $variantsRepository->createQueryBuilder('variants'); //'variants' is just alias, it can be whatever you want
$variants = $em->join('variants.privusers', 'user')
->where('user.privUserid = :user_id')->setParameter('user_id', $userid)
->getQuery()->getResult();
I have only two entities, Varianset and PrivUser, whereas the DB has three tables, one for each entity plus priv_user_variantset, which connects both via ManyToMany relationship.
It works now for the purpose of my API, but if you have any comment, they'll be very welcomed.