symfony - 来自关联实体的 Symfony 查询字段

Question

我有两个实体之间有关联：

Labs\CatalogBundle\Entity\ProductExtraspecs:
type: entity
table: orders__regmat__extraspecs

fields:
    regmatid:
        id: true
        type: integer
        scale: 11
    specid:
        id: true
        type: integer
        scale: 11
    attrib:
        type: string
        length: 20
    value:
        type: string
        length: 200

lifecycleCallbacks: {  }


manyToOne:
  specs:
    targetEntity: Specs
    inversedBy: specs
    joinColumn:
        name: specid
        referencedColumnName: specid

和

Labs\CatalogBundle\Entity\Specs:
    type: entity
    table: orders__regmat__extraspecs__specs
    fields:
        specid:
            id: true
            type: integer
            unsigned: false
            nullable: false
            generator:
                strategy: IDENTITY
        desc:
            type: string
            length: 200
            fixed: false
            nullable: false
        cat:
            type: integer
            unsigned: false
            nullable: false
        type:
            type: integer
            unsigned: false
            nullable: false

    lifecycleCallbacks: {  }


    oneToMany:
        specs:
            targetEntity: ProductExtraspecs
            mappedBy: specs

所以在控制器中我想用 and 获取所有行regmatid = 8并尝试了cat = 0这个：

$selRepository = $this -> getDoctrine() ->getEntityManager()->getRepository('LabsCatalogBundle:ProductExtraspecs'); 
    $query = $selRepository->createQueryBuilder('sel')
                        //->select('count(c.protid) as cnt')
                        ->where("sel.cat = '0' AND sel.regmatid = $id")
                        //->setParameter('price', '19.99')  
                        ->getQuery();
    $selected = $query->getResult();

但是得到一个错误说：

[语义错误] line 0, col 74 near 'cat = '0' AND': Error: Class Labs\CatalogBu​​ndle\Entity\ProductExtraspecs 没有名为 cat 的字段或关联

如何访问关联实体的字段？你能帮我吗？

先感谢您 ：）

Answer 1

您必须加入规格表：

$selRepository = $this->getDoctrine()->getRepository('LabsCatalogBundle:ProductExtraspecs'); 
$query = $selRepository->createQueryBuilder('sel')
    ->leftJoin('sel.spec', 'spec')
    ->where("spec.cat = '0' AND sel.regmatid = $id")
    ->setParameter('price', '19.99')  
    ->getQuery();
$selected = $query->getResult();