class UserPage_Controller  extends Page_Controller{
static $allowed_actions = array('my_method');
public function my_method($request)
{
return $this->customise(array(
                'form' => new Form_MyForm($this, __FUNCTION__)
            ))->renderWith(array('MyFormPage', 'Page'));
}

public function doProcessForm($request, $form) {
        die(var_export($request,true));
}
}