Django rest framework tips and tricks

Django rest framework tips and tricks

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  Django Rest Framework Tipsand Tricks Xavier ORDOQUY @linovia_net
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  Freelance! (since 2004) Python Django! (Backend) Ravenmaintainer! (Sentry client) Former! PyGTK! contributor Various! pull requests irc: Linovia @linovia_net Expertise Dev
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  Reminder • It isDjango ! ! • It is Python !
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  Fully featured • Serializers •ModelSerializers • Parsers • Renderers • Authentication • Permission • Throttling • Routers • Views • ViewSets • Filtering • Testing • Pagination
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  from rest_framework.decorators importapi_view!  ! @api_view(['GET'])! def hello_world(request):! return Response({"message": "Hello, world!"}) but loosely coupled Authentication Content negotiation Serializers Generic views
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  Customizable web interface
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  Debug toolbar
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  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]!
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  Class based views classMyMixin(object):! model = models.MyModel! serializer_class = serializers.MySerializer! ! ! class MyCreateView(MyMixin, CreateAPIView):! pass! • MRO: mixins are on the left side
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  # 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
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  Auth / Permissions •Auth are for knowing who you are ! • Permissions are to grant you access
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  Testing Utilities • APIRequestFactory+ format ! • force_authenticate • APIClient response = self.client.get('/users/4/')! self.assertEqual(response.data,! {'id': 4, 'username': 'lauren'})!
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  Performances • Fast toprototype • Easy to tune • Django performance tips also applies !
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  Tempsemms 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Full stack SerialisationRedis Content nego Middleware HttpResponse Database lookup Redis lookup Serialization Django request/response API view Response rendering
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  • Django RestFramwork Optimization:
 http://dabapps.com/blog/api-performance-profiling-django-rest-framework/