I can not assign an id "id": null

[agalera]

When doing a response with a dict, I have no way to return a different id, what can I do? I leave the code fragment and the answer I get

example_data = {
                "id": example.id,
                 .....
                "ref": example.ref,
                "error_url": self.data["attributes"]["error_url"],
                "return_url": self.data["attributes"]["return_url"],
            }
            
            serializer = self.get_serializer(data=example_data)
            serializer.is_valid(raise_exception=True)
            return Response(
                serializer.data,
                status=self.get_status_code(serializer.data),
                **kwargs
            )

We have trying to get one response from a new serializer whose content is the mix between two different models. We don't have a pk, because there are two models

The response returns this:

"data":{"type":"example","id":null,"attributes":{"...."}}

how could I get an id with a right value?

Thanks!

[kaigezhang]

Use you own renderer to rewrite the JSONRenderer method:
this line:

('id', encoding.force_text(resource_instance.pk) if resource_instance else resource.get('id'))

@classmethod
    def build_json_resource_obj(cls, fields, resource, resource_instance, resource_name,
                                force_type_resolution=False):
        # Determine type from the instance if the underlying model is polymorphic
        if force_type_resolution:
            resource_name = utils.get_resource_type_from_instance(resource_instance)
        resource_data = [
            ('type', resource_name),
            ('id', encoding.force_text(resource_instance.pk) if resource_instance else resource.get('id')),
            ('attributes', cls.extract_attributes(fields, resource)),
        ]
        relationships = cls.extract_relationships(fields, resource, resource_instance)
        if relationships:
            resource_data.append(('relationships', relationships))
        # Add 'self' link if field is present and valid
        if api_settings.URL_FIELD_NAME in resource and \
                isinstance(fields[api_settings.URL_FIELD_NAME], relations.RelatedField):
            resource_data.append(('links', {'self': resource[api_settings.URL_FIELD_NAME]}))
        return OrderedDict(resource_data)

[sliverc]

There is already a discussion #155 on how support could be added to DJA.

Closing this in favor of that issue. In your case you might also use a namedtuple though which has a pk property to represent the primary key.