urlpath.py 文件源码

def create_root(cls, site=None, title="Root", request=None, **kwargs):
        if not site:
            site = Site.objects.get_current()
        root_nodes = cls.objects.root_nodes().filter(site=site)
        if not root_nodes:
            # (get_or_create does not work for MPTT models??)
            article = Article()
            revision = ArticleRevision(title=title, **kwargs)
            if request:
                revision.set_from_request(request)
            article.add_revision(revision, save=True)
            article.save()
            root = cls.objects.create(site=site, article=article)
            article.add_object_relation(root)
        else:
            root = root_nodes[0]
        return root