Generator

UuidGenerator.php

<?php

namespace App\Entity\Generator;

use Doctrine\ORM\EntityManager;
use Doctrine\ORM\Id\AbstractIdGenerator;
use Symfony\Component\Uid\Uuid;

class UuidGenerator extends AbstractIdGenerator
{
    /**
     * Generates an identifier for an entity.
     *
     * @param EntityManager $em
     * @param object|null $entity
     * @return mixed
     */
public function generate(EntityManager $em, $entity): uuid {

        return uuid::v4();
    }
}