public function execute(&$value, &$error)
  {
    $password_param = $this->getParameter('password');
    $password = $this->getContext()->getRequest()->getParameter($password_param);

    $login = $value;

    $c = new Criteria();

    if (filter_var($login, FILTER_VALIDATE_EMAIL)) { // Vérifie si la chaine ressemble à un email
        $c->add(EtudiantPeer::EMAIL_PERSO, $login);
    } else {
        $c->add(EtudiantPeer::LOGIN, $login);
    }

    $user = EtudiantPeer::doSelectOne($c);

    // nickname exists?
    if ($user)
    {
      // password is OK?
      if (sha1($password) == $user->getPassword())
      {
        $this->getContext()->getUser()->setAuthenticated(true);
        $this->getContext()->getUser()->addCredential('subscriber');

        $this->getContext()->getUser()->setAttribute('subscriber_id', $user->getId(), 'subscriber');
        //$this->getContext()->getUser()->setAttribute('login', $user->getLogin(), 'subscriber');
        $this->getContext()->getUser()->setAttribute('email_perso', $user->getEmailPerso(), 'subscriber');
        // $this->getContext()->getUser()->setCulture('fr_FR');

        return true;
      }
    }

    $error = $this->getParameter('email_error');
    return false;
  }
}

 public function executeLogin()
  {
            if ($this->getRequest()->getMethod() != sfRequest::POST)
            {
                    // afficher le formulaire
                    //$this->getRequest()->setAttribute('referer', $this->getModuleName() . '/' . $this->getActionName());
                    return sfView::SUCCESS;
            }
            else
            {
                    // on redirige vers lancienne page

                    return $this->redirect('etudiant/infosperso');
            }
    }