private function getPaginationUrl($page, $sort, $desc)
    {
        $placeholder = '(:var)';

        $data = array(
            self::FILTER_PARAM_PAGE => $placeholder, 
            self::FILTER_PARAM_DESC => $desc, 
            self::FILTER_PARAM_SORT => $sort
        );

        return self::createUrl(array_merge($this->input, $data), $this->route);
    }