This is a (mostly) complete relationship example of a parent child relationship via Django Rest Framework

Django Rest Framework Complete Relational Example

# This example will allow you to manipluate a Parent and a Child via various endpoints
# /api - All endpoints
# /api/parents - Parents list
# /api/parents/(?P<pk>\d+) - Parent detail
# /api/parents/(?P<pk>\d+)/children - List of children of parent
# /api/children - Child list
# /api/children/(?P<pk>\d+) - Child Detail

# Models - models.py
# Pretty simple setup. Children have a FK to parent

from django.db import models
from django.contrib.auth.models import User

class Parent(models.Model):
	user = models.ForeignKey(User, related_name="user_parent")
	# other fields

	class Meta:
		verbose_name = 'Parent'
		verbose_name_plural = 'Parents'

class Child(models.Model):
	user = models.ForeignKey(User, related_name="user_child")
	parent = models.ForeignKey(Parent, related_name="parent_child")
	# other fields

	class Meta:
		verbose_name = 'Child'
		verbose_name_plural = 'Children'

# Permisions - permissions.py
# Basic permisions

from rest_framework.permissions import BasePermission, SAFE_METHODS

class IsStaffOrOwner(BasePermission):
	def has_permission(self, request, view):
		# allow user to list all users if logged in user is staff
		return view.action == 'retrieve' or 'create' or request.user.is_staff

	def has_object_permission(self, request, view, obj):
		return request.user.is_staff or request.user == obj.user

# Serializers - serializers.py

from django.contrib.auth.models import User
from rest_framework import serializers
from myproject.myapp import models


class ChildSerializer(serializers.HyperlinkedModelSerializer):
	user_child = serializers.HyperlinkedRelatedField(view_name="user-detail", read_only=True)

	class Meta:
		model = models.Child
		fields = ('id', 'url', 'user',)

class ParentSerializer(serializers.HyperlinkedModelSerializer):
	parent_child = serializers.HyperlinkedRelatedField(many=True, required=False, view_name='child-detail')
	user_parent = serializers.HyperlinkedRelatedField(view_name="user-detail", read_only=True)

	class Meta:
		model = models.Parent
		fields = ('id', 'url', 'user', 'parent_child')

# API Views - views.py

from django.contrib.auth.models import User
from rest_framework import viewsets
from rest_framework.decorators import list_route, detail_route
from rest_framework.response import Response

from .serializers import ParentSerializer, ChildSerializer
from .permissions import IsStaffOrOwner
from myproject.myapp import models

class ChildViewSet(viewsets.ModelViewSet):
	serializer_class = ChildSerializer
	permission_classes = (IsStaffOrOwner,)

	def get_queryset(self):
		if self.request.user.is_superuser:
			return models.Child.objects.all()
		else:
			return self.request.user.user_child.all()

	def pre_save(self, obj):
		obj.user = self.request.user

class ParentViewSet(viewsets.ModelViewSet):
	serializer_class = ParentSerializer
	permission_classes = (IsStaffOrOwner,)

	def get_queryset(self):
		if self.request.user.is_superuser:
			return models.Parent.objects.all()
		else:
			return self.request.user.user_parent.all()

	def pre_save(self, obj):
		obj.user = self.request.user

	# The detail_route allows me to see all the children of a parent
	# with the following URL: /api/parents/(?P<pk>\d+)/children

	@detail_route()
	def children(self, request, pk):
		parent = self.get_object(pk)
		children = parent.parent_child.all()
		serializer = ChildSerializer(hints)
		return Response(serializer.data)

# API URLS - urls.py

from django.conf.urls import patterns, include, url
from rest_framework.routers import DefaultRouter
from .myapp.api import views as myapp_views

router = DefaultRouter(trailing_slash=False)
router.register(r'children', myapp_views.ChildViewSet, base_name="child")
router.register(r'parent', myapp_views.TaskViewSet, base_name="parent")

urlpatterns = patterns('',

    # API URIs
    url(r'^api/', include(router.urls)),
    url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
    
)

What's with the "hints" in line 111 ? I am just browsing your code and shouldn't it throw a NameError? Thanks for boiling it down to a nearly complete piece dude! Good stuff :)