HyperlinkedNestedRelatedField

gistfile1.py

from rest_framework.relations import HyperlinkedRelatedField, PKOnlyObject


class HyperlinkedNestedRelatedField(HyperlinkedRelatedField):

    def __init__(self, view_name, parent_fields_by_kwargs, **kwargs):
        super(HyperlinkedNestedRelatedField, self).__init__(
            view_name,
            read_only=True,
            source='*',
            **kwargs
            )

        self._parent_fields_by_kwargs = parent_fields_by_kwargs

    def get_url(self, obj, view_name, request, format):
        if obj.pk is None:
            return None

        kwargs = {}
        for k, v in self.additional_reverse_kwargs.iteritems():
            args = v.split('.')
            source = obj
            for arg in args:
                if not isinstance(obj, PKOnlyObject):
                    source = getattr(source, arg)
                else:
                    try:
                        obj = self.get_queryset().first().__class__.objects.get(pk=source.pk)
                    except AttributeError:
                        obj = self.root.instance.__class__.objects.get(pk=source.pk)
                    source = getattr(obj, arg)
            kwargs[k] = source

        kwargs.update({self.lookup_url_kwarg: getattr(obj, self.lookup_field)})
        return self.reverse(view_name, kwargs=kwargs, request=request, format=format)