我有以下实体:
/**
* Acme\DemoBundle\Entity\Book
*
* @ORM\Table(name="book")
* @ORM\Entity(repositoryClass="Acme\DemoBundle\Repository\BookRepository")
* @ORM\HasLifecycleCallbacks
* @UniqueEntity(fields="publickey", groups={"publickey"})
*/
class P1guestlistentry {
/**
* @var P1guestlistentrystatistic
*
* @ORM\OneToOne(targetEntity="P1guestlistentrystatistic", orphanRemoval=true, cascade={"all"}, fetch="EAGER")
* @ORM\JoinColumns({
* @ORM\JoinColumn(name="fkstatistic", referencedColumnName="pkId", nullable=false)
* })
*/
private $fkstatistic;
当我尝试删除此处的对象时:
$this->getEntityManager()->getConnection()->beginTransaction();
try{
$book = $this->getEntityManager()->getRepository('AchmeDemoBundle:Book')->find(3928);
$this->getEntityManager()->remove($book);
$this->getEntityManager()->flush();
$this->getEntityManager()->getConnection()->commit();
}catch(Exception $e){
$this->getEntityManager()->getConnection()->rollBack();
echo $e->getMessage();
}
exit;
我可以做任何我想做的事,我得到以下错误:
执行'DELETE FROM book WHERE pkId =?'时发生异常with params {“1”:3928}:SQLSTATE [23000]:完整性约束违规:1451无法删除或更新父行:外键约束失败(
p1
。book
,CONSTRAINT {{1 } FOREIGN KEY(FK_F51A442F78734022
)参考fkstatistic
(bookstatistic
))
让人知道我做错了什么? 我尝试了很多方法,但没有任何帮助。
答案 0 :(得分:2)
如果有人遇到类似的问题,这就是解决方案:
/**
* @var statistic
*
* @ORM\OneToOne(targetEntity="statistic", cascade="ALL")
* @ORM\JoinColumns({
* @ORM\JoinColumn(name="fkStatistic", referencedColumnName="pkId", onDelete="SET NULL")
* })
*/
onDelete
选项将首先删除关系,然后doctrine将执行级联操作。