Question

使用此查询：

$qb = $this->createQueryBuilder('r');
$qb->leftJoin('r.users', 'u')
    ->addSelect('count(u.id) as user_count')
    ->groupBy('r.id');

我得到结果集：

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [id] => 45
                    [role_name] => ROLE_ADMIN
                    [description] => Admin roles
                )

            [user_count] => 1
        )

    [1] => Array
        (
            [0] => Array
                (
                    [id] => 47
                    [role_name] => ROLE_OPERATOR
                    [description] => Operator role
                )

            [user_count] => 1
        )

    [2] => Array
        (
            [0] => Array
                (
                    [id] => 48
                    [role_name] => ROLE_TEST
                    [description] => ROLE_TEST
                )

            [user_count] => 0
        )

)

是否存在将所有属性转换为同一级别的明智方法？现在，角色位于带有0键的子数组中。

所需结果：

Array
(
    [0] => Array
        (
            [id] => 45
            [role_name] => ROLE_ADMIN
            [description] => Admin roles
            [user_count] => 1
        )

    [1] => Array
        (
            [id] => 47
            [role_name] => ROLE_OPERATOR
            [description] => Operator role
            [user_count] => 1
        )

    [2] => Array
        (
            [id] => 48
            [role_name] => ROLE_TEST
            [description] => ROLE_TEST
            [user_count] => 0
        )

)

Answer 1

根据我的评论

我认为这是没有机会的，因为首先选择的是对象本身，第二个是另外选择的stmt。如果 user_count将是您对象的属性，它将起作用。

相反，您可以在Role实体上添加一个名为private $countUsers的新属性，并使用Doctrine LifecycleCallbacks事件PostLoad设置其值

Symfony权利：https://symfony.com/doc/current/doctrine/lifecycle_callbacks.html

学说事件：https://www.doctrine-project.org/projects/doctrine-orm/en/2.6/reference/events.html#lifecycle-events

学说联接的结果数据结构

1 个答案: