Let's say I have entity $e
. Is there any generic way to store it as another row, which would have the same entity data but another primary key?
Why I need this: I'm implementing some sort of Temporal Database schema and instead of updating the row I just need to create another one.
Try cloning and add the following method to your entity
public function __clone() {
$this->id = null;
}
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();
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();
Once flushed, the $new
entity had a new ID and was saved as a new row in the DB.
I would still null the ID property via the __clone()
method as it makes sense from a pure model view.
Digging into the Doctrine code, this is because the generated proxy classes implement __clone()
with this important line
unset($this->_entityPersister, $this->_identifier);