更新时间:2022-05-11 21:37:58
尝试克隆并将以下方法添加到您的实体中
Try cloning and add the following method to your entity
public function __clone() {
$this->id = null;
}
您可能需要 在持久化实体之前分离实体.我现在手头没有我的开发机器来测试这个.
You may need to detach the entity before persisting it. I don't have my dev machine handy to test this right now.
$f = clone $e;
$em->detach($f);
$em->persist($f);
$em->flush();
刚刚尝试使用一个简单的 SQLite 演示.你不应该做任何事情.以下对我有用,而无需添加 __clone()
方法或做任何其他不寻常的事情
Just tried using a simple SQLite demo. You shouldn't need to do anything. The following worked for me without adding a __clone()
method or doing anything else out of the ordinary
$new = clone $old;
$em->persist($new);
$em->flush();
刷新后,$new
实体有一个新 ID,并在数据库中保存为新行.
Once flushed, the $new
entity had a new ID and was saved as a new row in the DB.
我仍然会通过 __clone()
方法使 ID 属性为空,因为从纯模型视图来看它是有意义的.
I would still null the ID property via the __clone()
method as it makes sense from a pure model view.
深挖Doctrine代码,这是因为生成的代理类实现了__clone()
,这行很重要
Digging into the Doctrine code, this is because the generated proxy classes implement __clone()
with this important line
unset($this->_entityPersister, $this->_identifier);