extend UserManager to search User by relation (symfony3) - doctrine-orm

Question

I installed FOSUserbundle and HWI Oauth bundle.
My problem is: I want to access data from my user entity that is stored in a relation. I'd like to access the data from the fields social_network_slug and social_identifier from UserInSocialNetworks within the FOSUserProvider.
The idea was, that one user can have more that one social network logins. (1:n)- When I log in with my google/facebook etc login, I want to check the table user_in_social_networks if the Id with the social network already exists.
/*
* This is the User class, depending on fos_userBundle
*/
namespace AppBundle\Entity\Registration;
use Doctrine\Common\Collections\ArrayCollection as ArrayCollection;
use FOS\UserBundle\Model\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity
* #ORM\Table(name="user")
*/
class User extends BaseUser
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* One User can have many social networks
* #ORM\OneToMany(targetEntity="UserInSocialNetworks", mappedBy="user", cascade={"remove"})
*/
private $socialnetworks; ....
the Entity Class to store all User's social media logins:
<?php
namespace AppBundle\Entity\Registration;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* UserInSocialNetworks
*
* #ORM\Table(name="user_in_social_networks")
* #ORM\Entity(repositoryClass="AppBundle\Repository\Registration\UserInSocialNetworksRepository")
*/
class UserInSocialNetworks
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* Many Socialnetwork Logins have one User
* #ORM\ManyToOne(targetEntity="AppBundle\Entity\Registration\User", inversedBy="socialnetworks")
* #ORM\JoinColumn(name="user_id", referencedColumnName="id")
*
*/
private $user;
/**
* #var int
*
* #ORM\Column(name="social_network_slug", type="string", length=255, nullable=true)
*/
private $socialNetworkSlug;
/**
* #var string
*
* #ORM\Column(name="social_identifier", type="string", length=255, nullable=true)
*/
private $socialIdentifier;
The extended FOSUBUserProvider class:
<?php
namespace AppBundle\Entity\Registration;
use HWI\Bundle\OAuthBundle\OAuth\Response\UserResponseInterface;
use HWI\Bundle\OAuthBundle\Security\Core\User\FOSUBUserProvider as BaseClass;
use Symfony\Component\Security\Core\User\UserInterface;
class FOSUBUserProvider extends BaseClass
{
/**
* {#inheritDoc}
*/
public function loadUserByOAuthUserResponse(UserResponseInterface $response)
{
// get user_id and socialnetworkname from response
$userIdInSocialNetwork = $response->getUsername();
$socialnetwork = $response->getResourceOwner()->getName();
// Here I'd like to search for an existing $userIdInSocialNetwork
What I checked since now: I can't access the entitymanager in FOSUBUserProvider class, and I can't search that way:
$user = $this->userManager->findUserBy(array(
'socialIdentifier' => $userIdInSocialNetwork,
'social_network_slug' => $socialnetwork)
because it's a relation.
Thanks for any idea!

Answer 1

As you mentioned that you have extended FOSUBUserProvider i assume you have defined a new service for this, If so then you can pass doctrine's entity manager to your class #doctrine.orm.entity_manager. Following HWIOAuthBundle documentation for FOSUserBundle you can pass entity manager as
services:
my.custom.user_provider:
class: MyBundle\Security\Core\User\MyFOSUBUserProvider
arguments: ['#fos_user.user_manager', { facebook: facebook_id }, #doctrine.orm.entity_manager]
And then in your class you can use this service as
use Doctrine\ORM\EntityManager;
use FOS\UserBundle\Model\UserManagerInterface;
//.... other use statements
class FOSUBUserProvider extends BaseClass
{
private $em;
public function __construct(UserManagerInterface $userManager, array $properties, EntityManager $em)
{
$this->em = $em;
parent::__construct($userManager, $properties); /* pass dependencies to parent */
}
public function loadUserByOAuthUserResponse(UserResponseInterface $response)
{
$this->em->getRepository('AppBundle\Entity\Registration\UserInSocialNetworks')->findBy(....);
/* Do your stuff here */
}
}

Answer 2

Get error on my implementation but resolve this by adding quote to the third argument like bellow:
services:
my.custom.user_provider:
class: MyBundle\Security\Core\User\MyFOSUBUserProvider
arguments: ['#fos_user.user_manager', { facebook: facebook_id }, '#doctrine.orm.entity_manager']