Symfony 4 MongoDB ODM One to ONe relationship is not working - mongodb

Question

I am facing an error with symfony and mongoDB odm on one to one relationship
for example i have a user that has Work .
User Class:
/**
* #MongoDB\Document
* #MongoDBUnique(fields="email")
*/
class User implements UserInterface
{
/**
* #MongoDB\Id
*/
private $id;
/**
* #MongoDB\Field(type="string")
*/
private $firstName;
/**
* #MongoDB\Field(type="string")
*/
private $lastName;
/**
* #MongoDB\Field(type="string")
* #Assert\NotBlank()
* #Assert\Email()
*/
private $email;
/**
* #MongoDB\ReferenceOne(targetDocument=Work::class)
*/
private $work;
//getter setter
Work Class:
class Work
{
/**
* #MongoDB\Id()
*/
private $id;
/**
* #MongoDB\ReferenceOne(targetDocument=User::class)
*/
private $user;
//getter setter
}
Controller:
class TestingController extends AbstractController
{
/**
* #Route("/testing", name="testing")
* #param DocumentManager $documentManager
* #return Response
* #throws MongoDBException
*/
public function index(DocumentManager $documentManager)
{
$user = new User();
$user->setFirstName('test1');
$user->setLastName('test2');
$user->setEmail('test123#gmail.com');
$documentManager->persist($user);
$work= new Work();
$work->setUser($user);
$documentManager->persist($work);
$documentManager->flush();
return new Response("test");
}
/**
* #Route("/test", name="test")
* #param DocumentManager $documentManager
* #return Response
*/
public function test(DocumentManager $documentManager){
$user = $documentManager->getRepository(User::class)->findAll();
dump($user);
return new Response("test test");
}
}
So I created 2 classes one as user that has one work, I created the user , then I created a work and i assigned the user from the work class.
in MongoDB compass I got under Work collection a reference for the user.
now in the test method in the controller i try to find the users and dump the data.
The problem is whenever i want to find $user->getWork() i get a null value, while the user exists. but the inverse is working fine . whenever i try $work->getUser() i can find the user.
is there anything wrong in my code ? I want to use both methods : $user->getWork() and $work->getUser(),
I have tried adding to the ReferenceOne mappedBy and inversedBy but its always one of the two methods returns null value.

Answer 1

I think you forgot the mappedBy and inversedBy arguments in the annotation. See the documentation: https://www.doctrine-project.org/projects/doctrine-mongodb-odm/en/2.1/reference/bidirectional-references.html#one-to-one