A few things about Django REST Framework.

1. Django Rest Framework
Tips and Tricks
Xavier ORDOQUY
@linovia_net

2. Freelance!
(since 2004) Python
Django!
(Backend)
Raven maintainer!
(Sentry client)
Former!
PyGTK!
contributor
Various!
pull requests
irc: Linovia
@linovia_net
Expertise
Dev

3. Reminder
• It is Django !
!
• It is Python !

4. Fully featured
• Serializers
• ModelSerializers
• Parsers
• Renderers
• Authentication
• Permission
• Throttling
• Routers
• Views
• ViewSets
• Filtering
• Testing
• Pagination

5. from rest_framework.decorators import api_view!
!
@api_view(['GET'])!
def hello_world(request):!
return Response({"message": "Hello, world!"})
but loosely coupled
Authentication
Content negotiation
Serializers
Generic views

6. Customizable web interface

7. Debug toolbar

8. pre/post save
class MyCreateView(CreateAPIView):!
model = models.MyModel!
serializer_class = serializers.MySerializer!
!
def post_save(self, obj, created):!
if created:!
obj.reviewers = [user1, user2]!

9. Class based views
class MyMixin(object):!
model = models.MyModel!
serializer_class = serializers.MySerializer!
!
!
class MyCreateView(MyMixin, CreateAPIView):!
pass!
• MRO: mixins are on the left side

10. # views.py!
class UserViewSet(viewsets.ModelViewSet):!
queryset = User.objects.all()!
serializer_class = UserSerializer!
!
# urls.py!
router = DefaultRouter()!
router.register(r'users', views.UserViewSet)!
!
urlpatterns = patterns('',!
url(r'^', include(router.urls)),!
)!
Viewsets & routers
Nice to get started but optional

11. Auth / Permissions
• Auth are for knowing who you are
!
• Permissions are to grant you access

12. Testing Utilities
• APIRequestFactory + format !
• force_authenticate
• APIClient
response = self.client.get('/users/4/')!
self.assertEqual(response.data,!
{'id': 4, 'username': 'lauren'})!

13. Performances
• Fast to prototype
• Easy to tune
• Django performance tips also applies !

14. Tempsemms
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
Full stack Serialisation Redis Content nego Middleware HttpResponse
Database lookup Redis lookup Serialization
Django request/response API view Response rendering

16. • Django Rest Framwork Optimization:
http://dabapps.com/blog/api-performance-profiling-django-rest-framework/