sites.py 文件源码

def safe_unregister(self, *args, **kwargs):
        """
        Checks the deferred unregister for an existing unregister and doesn't
        add another one for this model

        returns False if this unregister call was skipped
        returns True if this unregister call was added

        This is mostly for re-registering Page models to the
        Clubhouse.admin.PageAdmin class..

        """
        # TODO: Possibly a smarter unregister / register check
        # this method assumes that if the admin has been unregistered
        # and needs to be re-registered you will use the clubhouse.PageAdmin
        # class.
        for name, deferred_args, deferred_kwargs in self._deferred:
            if name == "unregister" and deferred_args[0] == args[0]:
                return False
        else:
            self.unregister(*args, **kwargs)
            return True