+
+ $query = $em->createQuery("SELECT l1 FROM App\Entity\Localisation l1 WHERE l1.person = :person and l1.timestamp = (SELECT MAX(l2.timestamp) FROM App\Entity\Localisation l2 WHERE l2.person = l1.person)");
+ $query->setParameter('person', $request->get('id'));
+ $localisation = $query->getResult();