rest_framework_dyn_serializer.py 文件源码

def exclude_omitted_fields(self, request):
        field_names = self.get_requested_field_names(request)
        self._requested_fields = field_names

        if field_names is not None:
            # Drop any fields that are not specified in passed query param
            allowed = set(field_names)
            existing = set(self.fields.keys())
            for field_name in existing - allowed:
                self.fields.pop(field_name)

            for field_name in self.fields:
                field = self.fields[field_name]
                if isinstance(field, serializers.ListSerializer):
                    if isinstance(field.child, DynModelSerializer):
                        field.child.exclude_omitted_fields(request)
                elif isinstance(field, DynModelSerializer):
                    field.exclude_omitted_fields(request)