Question

我有一个问题。我不会通过我的帖子ID返回评论，但是当我这样做时，我有这个错误：

[Semantical Error] line 0, col 57 near 'post_id = :post_id': Error: Class Ibw\JobeetBundle\Entity\comments has no field or association named post_id

我的评论.orm.yml

Ibw\JobeetBundle\Entity\comments:
type: entity
table: null
repositoryClass: Ibw\JobeetBundle\Entity\commentsRepository
id:
    id:
        type: integer
        id: true
        generator:
            strategy: AUTO
fields:
    comment:
        type: text
    addDate:
        type: datetime
        column: add_date
    heading:
        type: string
        length: 255
    name:
        type: string
        length: 255   
manyToOne:
    postId:
        targetEntity: Blog
        inversedBy: comments
        joinColumn:
            name: post_id
            referencedColumnName: id
lifecycleCallbacks: {  }

我的Blog.orm.yml

Ibw\JobeetBundle\Entity\Blog:
type: entity
table: null
repositoryClass: Ibw\JobeetBundle\Entity\BlogRepository
id:
    id:
        type: integer
        id: true
        generator:
            strategy: AUTO
fields:
    title:
        type: string
        length: 255
    text:
        type: text
    created_at:
        type: datetime
    author:
        type: string
        length: 255
    image:
        type: string
        lenght: 255
        nullable: true
oneToMany:
    comments:
        targetEntity: comments
        mappedBy: Blog

lifecycleCallbacks: 
    prePersist: [ preUpload, setCreatedAtValue ]
    preUpdate: [ preUpload, setUpdatedAtValue ]
    postPersist: [ upload ]
    postUpdate: [ upload ]
    postRemove: [ removeUpload ]

这是我的方法：

    public function getComments($postId) {


    $qb = $this->createQueryBuilder('c')
            ->where('c.post_id = :post_id')
            ->setParameter('post_id', $postId)
            ->orderBy('c.add_date', 'DESC');



    return $qb->getQuery()->getResult();
}

最后一个代码是，我返回帖子的方法，以及评论：

    public function showAction($id) {
    $em = $this->getDoctrine()->getManager();

    $entity = $em->getRepository('IbwJobeetBundle:Blog')->find($id);

    if (!$entity) {
        throw $this->createNotFoundException('Unable to find Blog entity.');
    }

    $comments = $em->getRepository('IbwJobeetBundle:comments')
            ->getComments($id);

    $image = $entity->getWebsPath();

    return $this->render('IbwJobeetBundle:Blog:show.html.twig', array(
                'entity' => $entity,
                'image' => $image,
                'comments' => $comments
    ));
}

所以，我不知道为什么它不起作用，请帮助别人。

Answer 1

您应该可以使用JOIN方法检索评论，从而做到这一点。

<强> YourBundle /实体/ YourRepository.php

$qb = $this->createQueryBuilder('c')
           ->join('b.comments', 'b')
           ->where('c.post_id = :post_id')
           ->setParameter('c.post_id', $postId)
           ->orderBy('c.add_date', 'DESC');

return $qb->getQuery()->getResult();

我希望我不会在这段代码中犯错误。

Answer 2

我不知道为什么，但是当我写的时候错误地认为查询开始工作了而不是行名称实体名称：）

   $qb = $this->createQueryBuilder('c')
                ->select('c')
                ->where('c.postId = :id')
                ->setParameter('id', $blogId)
                ->addOrderBy('c.addDate', 'DESC');

Symfony2 ORM，实体manyToOne和oneToMany。没有工作查询

2 个答案: