class User_Model_User extends Ez_Row
{
    /**
     * @var string : Redirection
     */
    public $redirector = null;

    /**
     * Authentification utilisateur
     *
     * @param $credentialTreatment = null MD5 or other
     * @return Zend_Auth_Result
     */
    public function authenticate($credentialTreatment = null, $login = null, $password = null)
    {
        $db      = $this->getTable()->getAdapter();
        $table   = $this->getTable()->info('name');

        $validator = new Zend_Validate_EmailAddress();
        if($validator->isValid($login)) {
            $adapter = new Zend_Auth_Adapter_DbTable($db, $table, 'us_email', 'us_pass', $credentialTreatment);
            $adapter->setIdentity($login);
        } else {
            $adapter = new Zend_Auth_Adapter_DbTable($db, $table, 'us_login', 'us_pass', $credentialTreatment);
        }
        $adapter->setIdentity($login)
                ->setCredential($password);

        $result = $adapter->authenticate();
        if ($result->isValid()) {

            $this->setFromArray((array) $adapter->getResultRowObject());

            // Comme $this est un createRow, on requete direct la base en mettant à jour quelques infos
            $date = new Zend_Date();
            $this->us_last_access = $date->get('YYYY-MM-dd HH:mm:ss');
            $this->us_ip = $_SERVER['REMOTE_ADDR'];
            $db->update($table,
                        array('us_last_access' => $this->us_last_access, 'us_ip' => $this->us_ip),
                        array('us_id = ?' => $this->us_id));

            $this->us_pass = ''; // On enregistre pas le mot de passe en session
            Zend_Auth::getInstance()->getStorage()->write($this);
            Zend_Session::regenerateId();
        }
        return $result;
    }