Question

我用查询构建器编写了一个查询，但我找不到只返回一个Account实体数组的方法。基本上我在account_packages表上进行查询，但后来我需要返回来自另一个表的帐户entites。是否可以使用一个查询？

public function getAccountsWhichLocationPackagesExpire(DateTime $dateExpire)
{
    $qb = $this->entityManager->createQueryBuilder();
    $qb->select('p')
        ->from('ServicePaymentBundle:AccountPackage', 'p')
        ->where($qb->expr()->eq('p.dateExpire', ':dateExpire'))
        ->andWhere('p.alias = :alias')
        ->andWhere('p.enabled = :enabled')
        ->setParameter('dateExpire', $dateExpire->format('Y-m-d'))
        ->setParameter('alias', Package::TYPE_LOCATION)
        ->setParameter('enabled', 1)
        ->leftJoin('p.account', 'a');

    try {
        $result = $qb->getQuery()->getResult(); # Here I only need an array of account entities, not account packages. It would be nicer if they were distinct.
        # echo count($result);
        return $result;
    }
    catch(NoResultException $e) {
        return [];
    }
}

Answer 1

您应该反转您的查询。从Accounts中选择并加入AccountPackage。像这样：

$qb->select('a')
    ->from('ServicePaymentBundle:Account', 'a')
    ->leftJoin('a.accountPackages', 'p')
    ->where($qb->expr()->eq('p.dateExpire', ':dateExpire'))
    ->andWhere('p.alias = :alias')
    ->andWhere('p.enabled = :enabled')
    ->setParameter('dateExpire', $dateExpire->format('Y-m-d'))
    ->setParameter('alias', Package::TYPE_LOCATION)
    ->setParameter('enabled', 1);

仅当您的关系是双向的时，这才有效。像：

Account实体中的

：

/**
 * @ORM\OneToMany(targetEntity="SomePath\AccountPackage", inversedBy="account")
 */
private $accountPackages;

并在AccountPackage实体中：

/**
 * @ORM\ManyToOne(targetEntity="SomePath\Account", inversedBy="accountPackages")
 */
private $account;

Doctrine2查询构建器在连接后仅返回相关实体

1 个答案: