Query Builder with join and condition in Many to many relation - php

Question

I have a many to many relation with Employee and MembreFamille. And i want to get all MembreFamilles that have an Employee.
This is my query :
class MembreFamilleRepository extends EntityRepository
{
public function getMembres($emp)
{
$qb = $this->createQueryBuilder('a');
$qb
->leftJoin('a.employees', 'employees');
$qb
->where('employees.id = :id')
->setParameter('id', $emp);
return $qb
->getQuery()
->getResult()
;
}
}
When I test this function in the controller , the function return 0 result.
The mapping in Employee Entity:
/**
* #ORM\ManyToMany(targetEntity="PFE\EmployeesBundle\Entity\MembreFamille", cascade={"persist"})
*/
private $membreFamilles;
The Mapping in MembreFamille Entity :
/**
* #ORM\ManyToMany(targetEntity="PFE\UserBundle\Entity\Employee", cascade={"persist"})
*/
private $employees;
The use in the Controller ($employee is an instance of Employee Entity ) :
$list = $em->getRepository('PFEEmployeesBundle:MembreFamille')->getMembres($employee->getId());

Answer 1

You need to add a JoinTable for your ManyToMany association and set the owning and inverse sides:
/**
* #ORM\ManyToMany(targetEntity="PFE\EmployeesBundle\Entity\MembreFamille",
* cascade={"persist"}, mapped="employees")
*/
private $membreFamilles;
.................................
/**
* #ORM\ManyToMany(targetEntity="PFE\UserBundle\Entity\Employee", cascade={"persist"}, inversedBy="membreFamilles")
* #ORM\JoinTable(name="membre_familles_employees")
*/
private $employees;

Answer 2

You can use a construction called "MEMBER OF".
class MembreFamilleRepository extends EntityRepository
{
public function getMembres($emp)
{
return $this->createQueryBuilder('a');
->where(':employee MEMBER OF a.employees')
->setParameter('employee', $emp)
->getQuery()
->getResult()
;
}
}
You can use a construction called "MEMBER OF"