public function getCandidateByUserId($userId)
{
$id = intval($userId);
$req = $this->db->prepare('SELECT * FROM candidates WHERE userId = :id');
$req->execute(array('id' => $id));
$res = $req->fetch();
$candidate = Candidate::getModel($res);
$req = $this->db->prepare('SELECT * FROM educations WHERE cvId = :id');
$req->execute(array('id' => $candidate->cv->id));
$res = $req->fetchAll();
$candidate->cv->educations = Education::getModels($res);
$req = $this->db->prepare('SELECT * FROM professionalexperiences WHERE cvId = :id');
$req->execute(array('id' => $candidate->cv->id));
$res = $req->fetchAll();
$candidate->cv->professional_experiences = ProfessionalExperience::getModels($res);
return $candidate;
}