public function getLangUrl()
{
if ($this->_lang_url === null) {
$this->_lang_url = $this->getUrl();
$url_list = explode('/', $this->_lang_url);
$lang_url = isset($url_list[1]) ? $url_list[1] : null;
Lang::setCurrent($lang_url);
if ($lang_url !== null && $lang_url === Lang::getCurrent()->url && strpos($this->_lang_url, Lang::getCurrent()->url) === 1) {
$this->_lang_url = substr($this->_lang_url, strlen(Lang::getCurrent()->url) + 1);
}
}
return $this->_lang_url;
}