php - 如何在 Doctrine2/Symfony2 的存储库中获取外部存储库？

Question

我需要来自 2 个不同实体的值。我不知道该怎么做。到目前为止我尝试过这个:

<?php

namespace Pond\GeolocBundle\Entity;

use Doctrine\ORM\EntityRepository;

/**
 * PondLakeRepository
 *
 * This class was generated by the Doctrine ORM. Add your own custom
 * repository methods below.
 */
class PondLakeRepository extends EntityRepository
{

    public function getSwimsAvailableById($id)
    {
        // get the nb of swims of a lake
        $lake = $this->findOneById($id);
        $swims = $lake->getSwims();

        $repository = $this->getDoctrine()
                           ->getManager()
                           ->getRepository('PondGeolocBundle:User_Lake');

        //get the nb of users in a lake
        $qb = $this->_em->createQueryBuilder();
        $qb->select('count(a.id)');
        $qb->from('PondGeolocBundle:User_Lake', 'a');

        $nbOfUsers = $qb->getQuery()->getSingleScalarResult();

        // return the nb of swims available onthis lake
        $avail = $swims - $nbOfUsers;
        print_r ($avail);
    }

}

不起作用请帮忙。谢谢

Answer 1

您可以通过调用 Doctrine\ORM\EntityRepository#getEntityManager() 访问 EntityManager :

$repository = $this
    ->getEntityManager()
    ->getRepository('PondGeolocBundle:User_Lake');