Create a createQueryBuilder with UniqueConstraint on 2 keys - doctrine

Question

i'm trying to retrive data from several tables to make a json, but i'm stuck for the table having UniqueConstraint on 2 keys.
Here's my QueryBuilder sofar :
$qb = $this->_em->createQueryBuilder()
->select('partial s.{id, activity}, partial a.{id, title}, partial p.{id, evaluationType}')
->from('Innova\PathBundle\Entity\Step', 's')
->leftJoin('s.activity', 'a') //join on Activity entity
->leftJoin('a.parameters', 'p') // join on ActivityParameters entity
->andWhere('s.path = 2')
;
but i want to also join on Evaluation entity, which is :
/**
* #ORM\Table(
* name="claro_activity_evaluation",
* uniqueConstraints={
* #ORM\UniqueConstraint(
* name="user_activity_unique_evaluation",
* columns={"user_id", "activity_parameters_id"}
* )
* }
* )
*/
class Evaluation
{
/**
* #ORM\ManyToOne(targetEntity="Claroline\CoreBundle\Entity\User")
* #ORM\JoinColumn(onDelete="CASCADE", nullable=false)
*/
protected $user;
/**
* #ORM\ManyToOne(targetEntity="Claroline\CoreBundle\Entity\Activity\ActivityParameters")
* #ORM\JoinColumn(name="activity_parameters_id", onDelete="CASCADE", nullable=false)
*/
protected $activityParameters;
/**
* #ORM\Column(name="attempts_count", type="integer", nullable=true)
*/
protected $attemptsCount;
}
the User entity :
/**
* #ORM\Table(name="claro_user")
* #ORM\Entity(repositoryClass="Claroline\CoreBundle\Repository\UserRepository")
*/
class User
{
/**
* #var integer
*
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #var string
*
* #ORM\Column(name="first_name", length=50)
* #Assert\NotBlank()
*/
protected $firstName;
}
The ActivityParameters entity
/**
* #ORM\Entity
* #ORM\Table(name="claro_activity_parameters")
*/
class ActivityParameters
{
/**
* #var integer
*
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #var \Claroline\CoreBundle\Entity\Resource\Activity
*
* #ORM\OneToOne(
* targetEntity="Claroline\CoreBundle\Entity\Resource\Activity",
* mappedBy="parameters"
* )
* #ORM\JoinColumn(name="activity_id", onDelete="CASCADE", nullable=true)
*/
protected $activity;
/**
* #var string
*
* #ORM\Column(name="evaluation_type", nullable=true)
*/
protected $evaluationType;
/**
* #return string
*/
public function getEvaluationType()
{
return $this->evaluationType;
}
}
the Activity entity
/**
* #ORM\Table(name="claro_activity")
*/
class Activity
{
/**
* #var string
* #ORM\Column(length=255, nullable=true)
*/
protected $title;
/**
* #ORM\OneToOne(
* targetEntity="Claroline\CoreBundle\Entity\Activity\ActivityParameters",
* inversedBy="activity",
* cascade={"persist"}
* )
* #ORM\JoinColumn(name="parameters_id", onDelete="cascade", nullable=true)
*/
protected $parameters;
/**
* #return string
*/
public function getTitle()
{
return $this->title;
}
}
I have no clue how to modify this querybuilder to retrieve also hte data from Evaluation entity. I want something like :
$qb = $this->_em->createQueryBuilder()
->select('partial s.{id, activity}, partial a.{id, title}, partial p.{id, evaluationType}, e')
->from('Innova\PathBundle\Entity\Step', 's')
->leftJoin('s.activity', 'a') //join on Activity entity
->leftJoin('a.parameters', 'p') // join on ActivityParameters entity
->andWhere('s.path = 2')
->leftJoin('?i dont know what?', 'e') // join on Evaluation entity
->andWhere('e.user = 3') //data for a specific user
;
Thank you for any help

Answer 1

I "seem" to have found a nearly working solution, reading this topic : i had to make a subquery :
$qb->select('e, partial p.{id, evaluationType}, partial a.{id, title}')
->from('Claroline\CoreBundle\Entity\Activity\Evaluation', 'e')
->leftJoin('e.activityParameters', 'p')
->leftJoin('p.activity', 'a')
->where(
$qb->expr()->in( //needs a subquery
'a.id',
$subq->select('a2.id')
->from('Innova\PathBundle\Entity\Step', 's')
->leftJoin(
's.activity',
'a2',
\Doctrine\ORM\Query\Expr\Join::WITH,
$subq->expr()->eq('s.path', '?1') //can't do a andWhere('s.path = :path'))
)
->getDQL() //needs a dql, not a querybuilder for the main query
)
)
->andWhere($qb->expr()->eq('e.user', '?2')) //can't do a andWhere('e.user = :user'))
->setParameter(1, $pid)
->setParameter(2, $uid)
;
I just would also like to retrieve the Step entity data (id, ...) in the query result. I can't add 's' to the main select : i have Error: 's' is used outside the scope of its declaration.