Understanding Symfony 5 Doctrine ManyToOne relation concepts with Users and Roles - symfony

Question

I'm trying to understand Doctrine ORM relationship concepts, because I spent lot of time to create, according to me, a very simple use case, but, I didn't manage to do it because I've got a slack of knowledges...
Here is my issue :
I've got 2 entities, UserApp and RoleApp.
I want to have the possibility to manage roles from users threw a database, instead of hardcoding role, in array format, directly into users table. So to do that I've got a classic foreign key role_id into user_app table which references the primary key into role_app table.
I need, for each user, to get his role, and to bring it in the right format expected for Symfony Authentification :
class UserApp implements UserInterface, \Serializable{
.....
/**
* #var UserRole
* #ORM\ManyToOne(targetEntity="App\Entity\UserRole")
* #ORM\JoinColumn(nullable=false)
*
*/
private $role;
public function getUserRole(): array{ // I know it's wrong but I don't know what is the right type to get
return $this->role->getUserRole($this);
}
/**
* Returns the roles or permissions granted to the user for security.
*/
public function getRoles(): array{
//$role = ["ADMIN_USER"];
$role = $this->getUserRole();
dump($role);
return array_unique($role);
class UserRole{
/**
* #ORM\Column(type="json")
*/
private $appRole = [];
public function getUserRole(UserApp $user): ?array
{
$userRoleRepository = new UserRoleRepository();
$userRole[] = $userRoleRepository->find(1);
dump($userRole);
return $userRole;
}
}
But this code doesn't provide the right format for user's role need for Symfony authentification :(

Answer 1

Finaly I managed to do what I want; here is my solution, I hope it can help...
class UserApp implements UserInterface, \Serializable
{
....
/**
* #var UserRole
* #ORM\ManyToOne(targetEntity="App\Entity\UserRole")
* #ORM\JoinColumn(nullable=false)
*
*/
private $role;
public function getUserRole(): UserRole
{
return $this->role->getRoleUser($this);
}
/**
* Returns the roles or permissions granted to the user for security.
* it's for authentification compliance
*/
public function getRoles(): array
{
$arrRole = $this->getUserRole()->getAppRole();
return array_unique($arrRole);
}
......
class UserRole{
.....
/**
* #ORM\Column(type="json")
*/
private $appRole = [];//For authentification compliance
.....
public function getRoleUser(UserApp $user): ?self
{
return $this;
}`enter code here`