How to change Query to contain data from joined table? - symfony

Question

I have simple Entity:
id
username
guard
"guard" is id of another user from the same Entity. I have to render view with simple table:
username | name of guard
-------------------------
John | Bob
I tried to do that by query:
$ur = $this->getDoctrine()->getRepository(User::class)->createQueryBuilder('u')
->leftJoin(User::class, 'u2', \Doctrine\ORM\Query\Expr\Join::WITH, 'u.guard = u2.id')
->getQuery()
->getResult();
but it gives me just id and username, no joined data.
I know that entire query should be like:
SELECT
*
FROM
user u0_
LEFT JOIN user u1_ ON (u0_.guard = u1_.id)
but I can't find the way to implement that by QueryBuilder and then to access that in twig template.
Regards

Answer 1

OK, I found out the mistakes in my code:
I tried to set that OneToOne realtion and that was small mistake, but I needed here ManyToOne.
/**
* Many Users have One Guard (User)
* #ORM\ManyToOne(targetEntity="User")
*/
private $guard = 0;
When I did that Symfony automatically force me to change my code and in column "guard" I have to insert User object.
After that I don't need join anymore - just select data from table and guard column includes User object which I can use in Twig, etc.
namespace AppBundle\Entity;
use Doctrine\ORM\EntityRepository;
class UserRepository extends EntityRepository
{
public function findAllDB()
{
$qb = $this->createQueryBuilder('u');
$query = $qb->getQuery();
return $query->execute();
}
}