public function isValid($sValue, $mContext = null) { $oModelUser = new Admin_Model_User(); $sValue = (string) $sValue; if (is_array($mContext)) { if (isset($sValue)) { $sEmailAddress = $mContext["user_email_address"]; $sPassword = $sValue; if ($oModelUser->ajaxLogin($sEmailAddress, $sPassword)) { $this->_error(self::NOT_MATCH); return false; } } } return true; }