private function tryProcessPostData($postData)
{
$reqfields = array('username', 'password');
if (!$postData->hasValues($reqfields)) {
$this->errorMessage = 'Please submit username and password.';
return;
}
$fields = $reqfields;
extract($postData->filter($fields));
$uid = Authorization::login($username, $password);
if ($uid === false) {
$this->errorMessage = 'Incorrect user / password';
return;
}
$this->redirectTo('home');
exit;
}