def collect_url(self, link_parts = []):
        if self.parent != None:
            link_parts.append(self.parent.get_relative_url(False))
        return link_parts
    
    def get_relative_url(self, append_base = True):
        link = ''
        if append_base:
            link = self.module.base_url
        link_parts = self.collect_url()
        if str:
            link += '/'.join(link_parts)
        return '%s/%s' % (link, self.url)