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<?php
namespace App\Link;
use App\Entity\User;
use App\Repository\UserRepositoryInterface;
class LinkStudentsHelper {
public const StudentEduPerson = 'student';
private $repository;
public function __construct(UserRepositoryInterface $userRepository) {
$this->repository = $userRepository;
}
/**
* Establishes a link between the current user and a student user
*
* @param User $currentUser
* @param User $student
* @throws NotAStudentException
*/
public function link(User $currentUser, User $student) {
$studentEduPerson = $student->getType()->getEduPerson();
if(!in_array(static::StudentEduPerson, $studentEduPerson)) {
throw new NotAStudentException();
$ids = explode(',', $currentUser->getExternalId());
$ids[] = $student->getExternalId();
$currentUser->setExternalId(implode(',', $ids));
$this->repository->persist($currentUser);
* Returns all linked student users
* @param User $user
* @return User[]
public function getLinks(User $user): array {
$ids = explode(',', $user->getExternalId());
$users = [ ];
foreach($ids as $id) {
$user = $this->repository->findOneByExternalId($id);
if($user !== null) {
$users[] = $user;
return $users;
SchulIT /
idp
