Doctrine2:这些实体之间的关联有什么问题? [英] Doctrine2: What is wrong with the association between these entities?

问题描述

我正在尝试通过简单的示例来查看 Doctrine2 中的所有更改.

I am trying to work through simple examples to see all the changes in Doctrine2.

请查看以下实体片段:

VCat.php

namespace ApplicationModels;

/**
 * @Entity
 * @Table(name="v_cat")
 */
class VCat
{
    /** 
     * @Id @Column(type="bigint")
     * @GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @OneToMany(targetEntity="VScat", mappedBy="vCat")     )
     */
    private $vScats;

namespace ApplicationModels;

VScat.php

namespace ApplicationModels;
/**
 * @Entity
 * @Table(name="v_scat",indexes={@index(name="FK_v_scat",columns={"vcatid"})})
 */
class VScat
{
    /** 
     * @Id @Column(type="bigint")
     * @GeneratedValue(strategy="AUTO")
     */
    private $id;


    /**
     * @ManyToOne(targetEntity="VCat", inversedBy="vScats")
     * @JoinColumn(name="vcatid", referencedColumnName="id")
     */
    private $vCat;

vcatid 是表 v_scat 中的外键列

vcatid is the Foreign Key column in table v_scat

这是我要运行的查询:

$categories = Zend_Registry::get('em')
        -> createQuery('select c.name, sub.name as sub_name from ApplicationModelsVCat c JOIN c.VScat sub WHERE sub.active = 1 and c.active = 1 and c.id = sub.vcatid')
        -> getResult();

这是错误:

(string:130) [Semantical Error] line 0, col 69 near 'sub WHERE sub.active': Error: Class ApplicationModelsVCat has no association named VScat

这似乎是对的，但我显然错过了一些东西.

It seems right, but I am obviously missing something.

UPDATE 现在我得到这个错误，它指的是 mysql 中的表列名.这是不正确的吗?我想我需要以某种方式告诉 Doctrine 这个属性属于数据库中的这个字段.

UPDATE Now I get this error, which refers to the table column name in mysql. Is that incorrect? I thought I needed to tell Doctrine somehow that this property belongs to this field in the DB.

 Error: Class ApplicationModelsVScat has no field or association named vcatid

推荐答案

你需要引用的是VCat上的属性，而不是实体类型.

It's the property on VCat you need to reference not the entity type.

JOIN c.VScat sub 

应该是:

JOIN c.vScats sub 

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