pageadmin.py 文件源码

def get_revision_instances(self, request, object):
        """Returns all the instances to be used in the object's revision."""
        if isinstance(object, Title):
            object = object.page
        if isinstance(object, Page) and not object.publisher_is_draft:
            object = object.publisher_public
        placeholder_relation = find_placeholder_relation(object)
        data = [object]
        filters = {'placeholder__%s' % placeholder_relation: object}
        for plugin in CMSPlugin.objects.filter(**filters):
            data.append(plugin)
            plugin_instance, admin = plugin.get_plugin_instance()
            if plugin_instance:
                data.append(plugin_instance)
        if isinstance(object, Page):
            titles = object.title_set.all()
            for title in titles:
                title.publisher_public = None
                data.append(title)
        return data