models.py

from django.db import models

class Question(models.Model):
    contents = models.TextField()
    
class Answer(models.Model):
    contents = models.TextField()
    question = models.ForeignKey(Question)

serializers.py

from rest_framework import serializers

from .models import *

class QuestionSerializer(serializers.ModelSerializer):

    class Meta:
        model = Question
        
class AnswerSerializer(serializers.ModelSerializer):
    question = QuestionSerializer()

    class Meta:
        model = Answer

urls.py

from django.conf.urls import patterns, url, include

from rest_framework import routers

from app import views

router = routers.SimpleRouter(trailing_slash=False)
router.register(r'answers', views.AnswerViewSet)
router.register(r'questions', views.QuestionViewSet)

urlpatterns = patterns('vom',
    url(r'^', include(router.urls)),
)

views.py

from app import models, serializers

from rest_framework import viewsets

class QuestionViewSet(viewsets.ModelViewSet):
    serializer_class = serializers.QuestionSerializer
    queryset  = models.Question.objects.all()

class AnswerViewSet(viewsets.ModelViewSet):
    serializer_class = serializers.AnswerSerializer
    queryset  = models.Answer.objects.all()