Merge pull request #399 from robromano/master

Added login view for users of TokenAuthentication

docs/api-guide/authentication.md

@@ -112,6 +112,18 @@ If you've already created some User`'s, you can run a script like this.
     for user in User.objects.all():
         Token.objects.get_or_create(user=user)
 
+When using TokenAuthentication, it may be useful to add a login view for clients to retrieve the token. 
+
+REST framework provides a built-in login view for clients to retrieve the token called `rest_framework.authtoken.obtain_auth_token`. To use it, add a pattern to include the token login view for clients as follows:
+
+    urlpatterns += patterns('',
+        url(r'^api-token-auth/', 'rest_framework.authtoken.obtain_auth_token')
+    )
+
+The `r'^api-token-auth/'` part of pattern can actually be whatever URL you want to use. The authtoken login view will render a JSON response when a valid `username` and `password` fields are POST'ed to the view using forms or JSON:
+
+    { 'token' : '9944b09199c62bcf9418ad846dd0e4bbdfc6ee4b' }
+
 ## OAuthAuthentication
 
 This policy uses the [OAuth 2.0][oauth] protocol to authenticate requests.  OAuth is appropriate for server-server setups, such as when you want to allow a third-party service to access your API on a user's behalf.

docs/topics/credits.md

@@ -60,6 +60,7 @@ The following people have helped make REST framework great.
 * Ben Konrath - [benkonrath]
 * Marc Aymerich - [glic3rinu]
 * Ludwig Kraatz - [ludwigkraatz]
+* Rob Romano - [robromano]
 * Eugene Mechanism - [mechanism]
 
 Many thanks to everyone who's contributed to the project.
@@ -156,4 +157,6 @@ To contact the author directly:
 [benkonrath]: https://github.com/benkonrath
 [glic3rinu]: https://github.com/glic3rinu
 [ludwigkraatz]: https://github.com/ludwigkraatz
+[robromano]: https://github.com/robromano
 [mechanism]: https://github.com/mechanism
+

docs/topics/release-notes.md

@@ -4,6 +4,8 @@
 >
 > — Eric S. Raymond, [The Cathedral and the Bazaar][cite].
 
+* Add convenience login view to get tokens when using `TokenAuthentication`
+
 ## 2.1.3
 
 **Date**: 16th Nov 2012

rest_framework/authtoken/serializers.py

+from django.contrib.auth import authenticate
+from rest_framework import serializers
+
+class AuthTokenSerializer(serializers.Serializer):
+    username = serializers.CharField()
+    password = serializers.CharField()
+
+    def validate(self, attrs):
+        username = attrs.get('username')
+        password = attrs.get('password')
+
+        if username and password:
+            user = authenticate(username=username, password=password)
+
+            if user:
+                if not user.is_active:
+                    raise serializers.ValidationError('User account is disabled.')
+                attrs['user'] = user
+                return attrs
+            else:
+                raise serializers.ValidationError('Unable to login with provided credentials.')
+        else:
+            raise serializers.ValidationError('Must include "username" and "password"')
+

rest_framework/authtoken/views.py

+from rest_framework.views import APIView
+from rest_framework import status
+from rest_framework import parsers
+from rest_framework import renderers
+from rest_framework.response import Response
+from rest_framework.authtoken.models import Token
+from rest_framework.authtoken.serializers import AuthTokenSerializer
+
+class ObtainAuthToken(APIView):
+    throttle_classes = ()
+    permission_classes = ()
+    parser_classes = (parsers.FormParser, parsers.MultiPartParser, parsers.JSONParser,)
+    renderer_classes = (renderers.JSONRenderer,) 
+    model = Token
+
+    def post(self, request):
+        serializer = AuthTokenSerializer(data=request.DATA)
+        if serializer.is_valid():
+            token, created = Token.objects.get_or_create(user=serializer.object['user'])
+            return Response({'token': token.key})
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+
+obtain_auth_token = ObtainAuthToken.as_view()

rest_framework/tests/authentication.py

-from django.conf.urls.defaults import patterns
+from django.conf.urls.defaults import patterns, include
 from django.contrib.auth.models import User
 from django.test import Client, TestCase
 
@@ -27,6 +27,7 @@ MockView.authentication_classes += (TokenAuthentication,)
 
 urlpatterns = patterns('',
     (r'^$', MockView.as_view()),
+    (r'^auth-token/', 'rest_framework.authtoken.views.obtain_auth_token'),
 )
 
 
@@ -152,3 +153,33 @@ class TokenAuthTests(TestCase):
         self.token.delete()
         token = Token.objects.create(user=self.user)
         self.assertTrue(bool(token.key))
+
+    def test_token_login_json(self):
+        """Ensure token login view using JSON POST works."""
+        client = Client(enforce_csrf_checks=True)
+        response = client.post('/auth-token/login/', 
+                               json.dumps({'username': self.username, 'password': self.password}), 'application/json')
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(json.loads(response.content)['token'], self.key)
+
+    def test_token_login_json_bad_creds(self):
+        """Ensure token login view using JSON POST fails if bad credentials are used."""
+        client = Client(enforce_csrf_checks=True)
+        response = client.post('/auth-token/login/', 
+                               json.dumps({'username': self.username, 'password': "badpass"}), 'application/json')
+        self.assertEqual(response.status_code, 400)
+
+    def test_token_login_json_missing_fields(self):
+        """Ensure token login view using JSON POST fails if missing fields."""
+        client = Client(enforce_csrf_checks=True)
+        response = client.post('/auth-token/login/', 
+                               json.dumps({'username': self.username}), 'application/json')
+        self.assertEqual(response.status_code, 400)
+
+    def test_token_login_form(self):
+        """Ensure token login view using form POST works."""
+        client = Client(enforce_csrf_checks=True)
+        response = client.post('/auth-token/login/', 
+                               {'username': self.username, 'password': self.password})
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(json.loads(response.content)['token'], self.key)