workflow.py 文件源码

def update_available(self):
        """Whether an update is available.

        .. versionadded:: 1.9

        See :ref:`manual-updates` in the :ref:`user-manual` for detailed
        information on how to enable your workflow to update itself.

        :returns: ``True`` if an update is available, else ``False``

        """
        # Create a new workflow object to ensure standard serialiser
        # is used (update.py is called without the user's settings)
        update_data = Workflow().cached_data('__workflow_update_status',
                                             max_age=0)

        self.logger.debug('update_data : {0}'.format(update_data))

        if not update_data or not update_data.get('available'):
            return False

        return update_data['available']