Question

我定义了2个实体：

州实体
城市实体

我正在尝试选择州实体并自动加入城市实体，并按州名称对结果进行排序。但是，我收到了这个错误：

[Syntax Error] line 0, col 74: Error: Expected Literal, got 'BY'

我创建查询的代码是：

$statesQuery = $this->getEm()->createQueryBuilder();
$statesQuery->select("st");
$statesQuery->from("CoreBundle:State", "st");
$statesQuery->leftJoin("CoreBundle:City", "ct");
$statesQuery->addSelect("ct");
$statesQuery->orderBy("st.name", "ASC");

$statesQuery = $statesQuery->getQuery();

$states = $statesQuery->getResult();

如果我删除订单按方法，我会收到以下错误：

[Syntax Error] line 0, col -1: Error: Expected Doctrine\ORM\Query\Lexer::T_WITH, got end of string.

DQL生成的查询（带有顺序By和没有orderBy）：

SELECT st, ct FROM CoreBundle:State st LEFT JOIN CoreBundle:City ct ORDER BY s.name ASC

SELECT st, ct FROM CoreBundle:State st LEFT JOIN CoreBundle:City ct

州实体：

Ec\CoreBundle\Entity\State:
    type: entity
    table: states
    id:
        id:
            type: integer
            nullable: false
            unsigned: false
            comment: ''
            id: true
            generator:
                strategy: IDENTITY
    fields:
        name:
            type: string
            nullable: false
            length: 255
        friendly_url:
            type: string
            nullable: false
            length: 255
    oneToMany:
        cities:
            targetEntity: City
            mappedBy: state
    oneToOne:
        country:
            targetEntity: Country
    lifecycleCallbacks: {  }

城市实体：

Ec\CoreBundle\Entity\City:
    type: entity
    table: cities
    id:
        id:
            type: integer
            nullable: false
            unsigned: false
            comment: ''
            id: true
            generator:
                strategy: IDENTITY
    fields:
        name:
            type: string
            nullable: false
            length: 255
        friendly_url:
            type: string
            nullable: false
            length: 255
    manyToOne:
        state:
            targetEntity: State
            inversedBy: cities
    lifecycleCallbacks: {  }

Answer 1

如果要检索状态集合（以及关联的城市），这就足够了：

// src/AcmeBundle/Controller/MyController.php
// ...

$statesQuery = $this->getDoctrine()->getManager()->createQueryBuilder();
$statesQuery->select("st")
            ->from("CoreBundle:State", "st")
            ->orderBy("st.name", "ASC");

$states = $statesQuery->getQuery()
                      ->getResult();

所以城市将会延迟加载。有关延迟/急切加载的更多信息，请查看doctrine2 doc

修改好吧，如果你只在一个地方需要这个，只需：

$statesQuery = $this->getDoctrine()->getManager()->createQueryBuilder(); $statesQuery->select("st, ct") ->from("CoreBundle:State", "st") ->leftJoin("st.cities", "ct") ->orderBy("st.name", "ASC"); $states = $statesQuery->getQuery() ->getResult();

symfony2＆amp; doctrine orderBy / DQL错误

1 个答案: