我在两个实体之间建立双向一对一关系时遇到问题。我有一个可以引用另一个实体“DonationData”的实体“Campaign”。创建的捐赠数据始终与活动相关联。我想要一个双向关系，因为我希望能够从 DonationData 实体中找到相关的活动。
这是我的活动实体代码：
<?php
/**
* @ORM\Entity
* ...
*/
class Campaign
{
...
/**
* @ORM\OneToOne(targetEntity="DonationData", mappedBy="campaign", cascade={"persist", "remove"})
*/
protected $donationData;
...
/**
* Set donationData
*
* @param DonationData $donationData
* @return Campaign
*/
public function setDonationData(DonationData $donationData = null)
{
$this->donationData = $donationData;
return $this;
}
...
?>
以及我的 DonationData 实体的相关代码：
<?php
/**
* @ORM\Entity
* ...
*/
class DonationData
{
...
/**
* @ORM\OneToOne(targetEntity="Campaign")
* @ORM\JoinColumns({
* @ORM\JoinColumn(name="campaign_id", referencedColumnName="id")
* })
*/
protected $campaign;
...
/**
* Set campaign
* @param Campaign $campaign
*
* @return DonationData
*/
public function setCampaign($campaign)
{
$this->campaign = $campaign;
return $this;
}
...
?>
我在我的活动表单 (CampaignType.php) 中添加我的 DonationData 表单的一段代码
<?php
...
->add('donationData', new DonationDataType(), array(
'label' => false
))
...
?>
And in the CampaignController.php side, when I'm handling the creation operations, I didn't change anything : I'm just persisting the related entity binded from the request, and then flushing the Entity Manager :
<?php
...
$em->persist($campaign);
$em->flush();
...
?>
My problem is when I want to persist a Campaign entity form that has an embedded DonationData form inside. I successfully persist both the Campaign and the DonationData entities, but there is only the donation_data_id reference in the Campaign entry that is persisted. When I look in database to the persisted DonationData, the campaign_id is always set to NULL.
Do you see any explanation for that?
Thank you.