page::relative_uri PHP 메소드

    public function relative_uri()
    {
        $segments = array($this->slug);
        $parent = $this->parent;
        while ($parent) {
            $page = static::find($parent);
            $segments[] = $page->slug;
            $parent = $page->parent;
        }
        return implode('/', array_reverse($segments));
    }