Let's say I have a entity called User:
class User implements UserInterface
/**
* @ORM\Id()
* @ORM\GeneratedValue()
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=255, nullable=false)
*/
private $username;
/**
* @ORM\OneToOne(targetEntity="App\Entity\Address", cascade={"persist", "remove"})
* @ORM\JoinColumn(nullable=false)
*/
private $address;
The address field is a OneToOne relation to the address entity:
class Address
{
/**
* @ORM\Id()
* @ORM\GeneratedValue()
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=255)
*/
private $street;
/**
* @ORM\Column(type="string", length=255)
*/
private $name;
And I have a Controller for updating the user and his address:
...
public function putUserSelf(Request $request)
{
$em = $this->getDoctrine()->getManager();
$user = $this->getUser();
$encoders = array(new JsonEncoder());
$normalizers = array(new ObjectNormalizer(null, null, null, new ReflectionExtractor()));
$serializer = new Serializer($normalizers, $encoders);
$user = $serializer->deserialize($request->getContent(), User::class, "json", ['deep_object_to_populate' => $user]);
$em->persist($user);
$em->flush();
In theory I should now be possible to pass a json like this:
{
"username": "foo",
"address": {"name": "bar"}
}
to update my entity. But the problem is, that I get a sql error:
An exception occurred while executing 'INSERT INTO address (street, name) VALUES (?, ?)' with params [null, "bar"]:
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'street' cannot be null
It seems like the entity merge did not work.
according to the docs,
When the
AbstractObjectNormalizer::DEEP_OBJECT_TO_POPULATEoption is set to true, existing children of the rootOBJECT_TO_POPULATEare updated from the normalized data, instead of the denormalizer re-creating them. [...] (emphasis mine)
so you have to set an extra option, so your line should be:
$user = $serializer->deserialize($request->getContent(), User::class, "json", [
'object_to_populate' => $user, // this still needs to be set, without the "deep_"
'deep_object_to_populate' => true,
]);
there is some additional comment in the source code of the specific component:
/** * Flag to tell the denormalizer to also populate existing objects on * attributes of the main object. * * Setting this to true is only useful if you also specify the root object * in OBJECT_TO_POPULATE. */ public const DEEP_OBJECT_TO_POPULATE = 'deep_object_to_populate';