The document introduces Django REST framework, which makes it easy to build web APIs. It includes serializers to convert data to and from JSON/XML, an API browser, and security features out of the box. Serializers define how models are exposed in the API. Views provide endpoints and connect models and serializers. Routers automatically generate URLs and handle requests to the views. The framework handles common tasks like validation and HTTP status codes so APIs can be built quickly.

1. DJANGO REST
FRAMEWORK
IN 20 MINUTEN ;)
Python User Group Bonn, 16. April 2015
Andi Albrecht

2. "Django REST framework is a powerful and flexible toolkit
that makes it easy to build Web APIs."
http://www.django-rest-framework.org/

3. BATTERIES INCLUDED
API Browser
Serialisierung von Daten und Django-Models
automatische View-Generierung
Sicherheitsmechanismen
Validierung, sinnvolle HTTP-Status-Codes, URL-Muster,
etc.
Doku, Doku, Doku...

4. HOW IT WORKS:
SERIALIZERS
from django.contrib.auth.models import User, Group
from rest_framework import serializers
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
class GroupSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Group
fields = ('url', 'name')

5. HOW IT WORKS: VIEWS
from django.contrib.auth.models import User, Group
from rest_framework import viewsets
from quickstart.serializers import UserSerializer, GroupSerializer
class UserViewSet(viewsets.ModelViewSet):
"""API endpoint that allows users to be viewed or edited."""
queryset = User.objects.all()
serializer_class = UserSerializer
class GroupViewSet(viewsets.ModelViewSet):
"""API endpoint that allows groups to be viewed or edited."""
queryset = Group.objects.all()
serializer_class = GroupSerializer

6. HOW IT WORKS:
ROUTER
from django.conf.urls import url, include
from rest_framework import routers
from tutorial.quickstart import views
router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'groups', views.GroupViewSet)
# Wire up our API using automatic URL routing.
# Additionally, we include login URLs for the browsable API.
urlpatterns = [
url(r'^', include(router.urls)),
url(r'^api­auth/', include('rest_framework.urls'))
]

7. DONE.
(Demo)