Question

我有2个非相关实体：外部和内部。我需要联合选择实体的所有结果。我正在使用ResultSetMapping和Native SQL来执行此操作：

 $em = $this->getDoctrine()
        ->getManager()->getConnection();
 $rsm = new \Doctrine\ORM\Query\ResultSetMapping();
    $rsm->addEntityResult('ExternalBundle:External', 'e');
    $rsm->addFieldResult('e', 'id', 'id');
    $rsm->addFieldResult('e', 'status', 'status');
    $rsm->addFieldResult('e', 'name', 'name');
    $rsm->addEntityResult('InternalBundle:Internal', 'i');
    $rsm->addFieldResult('i', 'id', 'id');
    $rsm->addFieldResult('i', 'status', 'status');
    $rsm->addFieldResult('i', 'name', 'name');
    $sql = "SELECT e.*
FROM external_print e
UNION
SELECT i.*
FROM internal_print i";
    $objects = $this->$em->createNativeQuery($sql, $rsm)->getResult();

我一直收到此错误：可捕获的致命错误：类Doctrine \ ORM \ EntityManager的对象无法转换为字符串。

需要修复什么？

Answer 1

您有代码错误而不是

$objects = $this->$em->createNativeQuery($sql, $rsm)->getResult();

仅使用

$objects = $em->createNativeQuery($sql, $rsm)->getResult();

Symfony2错误：类Doctrine \ ORM \ EntityManager的对象无法转换为字符串

1 个答案: