filters.py 文件源码

def filter_queryset(self, request, queryset, view):
        queryset = self._xform_filter_queryset(request, queryset, view,
                                               'instance__xform')
        instance_id = request.query_params.get('instance')
        if instance_id:
            try:
                int(instance_id)
            except ValueError:
                raise ParseError(
                    u"Invalid value for instance %s." % instance_id)
            instance = get_object_or_404(Instance, pk=instance_id)
            queryset = queryset.filter(instance=instance)

        return queryset