JOIN 的 QueryBuilder 问题

Question

我对 Doctrine queryBuilder 有问题。我有两个实体：捐赠和捐赠者。我只想做一个左连接（因为 Donations.donorId 指的是 Donateurs.id，例如。）关于 DonationsRepository 的查询：public function showAll()    {        $qb = $this->createQueryBuilder('dr')            ->select('dr, dn')            ->leftJoin('dr.donateurs','dn')            ->getQuery()            ->execute();        return $qb;    }调用我的 Controller.php ：public function don(DonationsRepository $repo, Request $request)    {        $qb = $repo->showAll();        var_dump($qb);        // Then return to Twig    }这是一个var_dump示例：array (size=14)  0 =>     object(App\Entity\Donations)[989]      private 'id' => int 197      private 'movement' => string 'D' (length=1)      private 'departDate' =>         object(DateTime)[885]          public 'date' => string '2023-11-18 00:00:00.000000' (length=26)          public 'timezone_type' => int 3          public 'timezone' => string 'Europe/Paris' (length=12)      private 'certifDate' =>         object(DateTime)[993]          public 'date' => string '2023-11-18 00:00:00.000000' (length=26)          public 'timezone_type' => int 3          public 'timezone' => string 'Europe/Paris' (length=12)      private 'certifRef' => string 'EO62' (length=4)      private 'productName' => string 'Clémentines' (length=12)      private 'donorId' => int 1      private 'family' => string 'Frais' (length=5)      private 'recipient' => string 'EO62' (length=4)      private 'carrierId' => int 3      private 'nbPallet' => int 33      private 'weight' => int 19720      private 'billDate' =>         object(DateTime)[891]          public 'date' => string '2023-11-18 00:00:00.000000' (length=26)          public 'timezone_type' => int 3          public 'timezone' => string 'Europe/Paris' (length=12)      private 'billReceptionDate' =>         object(DateTime)[992]所有数据仅来自我的捐赠实体......但是如果我execute()从我的存储库中删除它，并且我$qb->execute从我的控制器中执行一个......var_dump返回给我类似的东西（这是一个示例，转储太大）