Python Django回复-如何使用Django Rest设置_注释

我正试图在表还原\u修订版中保存注释。然而，我仍然得到了空值评论。 我尝试的是：

ModelViewset中的

class RevisionMixin(object):
    @reversion.create_revision()
    def dispatch(self, request, *args, **kwargs):
        if request.method in ("POST", "PATCH", "PUT") and request.user.is_authenticated():
            reversion.set_comment('Hello')
        return super(RevisionMixin, self).dispatch(request, *args, **kwargs)


class HistoryViewset(ReversionViewMixin, viewsets.ModelViewSet):
    queryset = Version.objects.all()
    serializer_class = VersionSerializer
    filter_backends = (filters.DjangoFilterBackend,)