Django-rest-framework metadata endpoint example

index.md

class ExampleViewSet(PartialUpdateModelMixin, viewsets.ReadOnlyModelViewSet):
    ...

    @action(detail=False, methods=["GET"], url_path="_meta")
    def api_meta(self, request):
        meta = {
            "fields": {
                "types": {
                    "choices": Example.ExampleType.choices
                },
                "method": {
                    "choices": Example.ExampleMethod.choices
                }
            }
        }
        return Response(meta)

In this example, our model have a "types" field, it's an array.