Doctrine和ZF2中的ORM关系映射问题

时间:2013-08-30 03:22:51

标签: orm doctrine zend-framework2 one-to-many many-to-one

我对Doctrine \ ORM \ Mapping问题感到困惑。我有两个实体,它们是多对一,单向关联。我想操作Chipinfo(添加/更新/删除)而不影响生产者。只有坚持Chipinfo而没有坚持生产者..

class Chipinfo  implements
{
/**
 * @var integer
 *
 * @ORM\Column(name="ChipID", type="integer", nullable=false)
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="IDENTITY")
 */
protected $chipid;

/**
 * @var \Shop\Entity\Producer
 *
 * @ORM\ManyToOne(targetEntity="Shop\Entity\Producer")
 * @ORM\JoinColumns({
 *   @ORM\JoinColumn(name="pId", referencedColumnName="producerid")
 * })
 */
protected $pid;
}  
class Producer{

/**
* @ORM\Id
* @ORM\Column(name="producerid", type="integer");
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $producerId;

/**
* @ORM\Column(name="producername", type="string")
*/
protected $producerName;
}

ChipInfo和Producer是多对一的单向关系:chipinfo只能由一个生产者构建,而一个生产者可以构建多个chipinfos。我想要的是:在Chipinfo中添加/更新/删除项目不会对Producer产生任何影响。

$chip = new Chipinfo();
$formData = $this->initFormData($form->getData());
$chip->populate($formData);
$this->getEntityManager()->persist($chip);
$this->getEntityManager()->flush();

private function initFormData(&$raw){

    $raw['eid'] = new Encapuser($this->findEntity("Shop\Entity\Encapuser", $raw['eid']));
    $this->log($raw->eid);
    $raw['vid'] = new Vendors($this->findEntity("Shop\Entity\Vendors", $raw['vid']));

    $raw['pid'] = new Producer($this->findEntity("Shop\Entity\Producer", $raw['pid']));

    $this->log($raw);
    return $raw;

}

会抛出错误:    

    A new entity was found through the relationship 'Shop\Entity\Chipinfo#pid' that was not configured to cascade persist operations for entity: Shop\Entity\Producer@00000000349002ee00000000c955fd11. To solve this issue: Either explicitly call EntityManager#persist() on this unknown entity or configure cascade persist  this association in the mapping for example @ManyToOne(..,cascade={"persist"}). If you cannot find out which entity causes the problem implement 'Shop\Entity\Producer#__toString()' to get a clue.

然后我将pid配置为:  

 @ORM\ManyToOne(targetEntity="Shop\Entity\Producer", cascade={"persist"})

虽然错误消失了,但这不是我想要的。因为当我用现有的生产者A调用chipinfo的flush()时,会插入一个重复的新A.

因此,我的问题是: 1)我应该如何配置@manyToone字段,我没有从http://doctrine-orm.readthedocs.org/en/2.0.x/reference/working-with-associations.html#transitive-persistence-cascade-operations获得线索

2)我应该添加:           @ORM \ OneToMany,targetEntity =“Shop \ Entity \ Producer”           私人@chip;

在制片人?如果是这样,生产者的操作(添加/删除/更新)是否需要构建一个@chip?

1 个答案:

答案 0 :(得分:1)

您必须在实体的$ pid字段中设置现有生产者(由学说检索的实体)。

为什么要创建新的制作人? findEntity做什么?它似乎没有从Doctrine中检索实际的实体,为什么会这样?

通常你会这样做:

$chip->setPid($this->getEntityManager()->getRepository('Shop\Entity\Producer')->find($pid));