films-symfony-4-2/src/Repository/UserRepository.php

<?php

namespace App\Repository;

use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
use Doctrine\Persistence\ManagerRegistry;
use App\Entity\User;

/**
 * @method User|null find($id, $lockMode = null, $lockVersion = null)
 * @method User|null findOneBy(array $criteria, array $orderBy = null)
 * @method User[]    findAll()
 * @method User[]    findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
 */

class UserRepository extends ServiceEntityRepository
{
    public function __construct(ManagerRegistry $registry)
    {
        parent::__construct($registry, User::class);
    }

    public function findUser($userId)
    {
        $qb = $this
            ->createQueryBuilder('u')
            ->leftJoin('u.films', 'f')
            ->addSelect('f')
            ->where('u.id = :user')
            ->setParameter('user' , $userId);

        return $qb
            ->getQuery()
            ->getSingleResult();
    }
}