create base view and serializer for social authentication

rest_auth/registration/serializers.py

@@ -0,0 +1,43 @@
+from rest_framework import serializers
+from requests.exceptions import HTTPError
+from allauth.socialaccount.helpers import complete_social_login
+
+
+class SocialLoginSerializer(serializers.Serializer):
+
+    access_token = serializers.CharField(required=True)
+
+    def validate_access_token(self, attrs, source):
+        access_token = attrs[source]
+
+        view = self.context.get('view')
+        request = self.context.get('request')
+
+        if not view:
+            raise serializers.ValidationError('View is not defined, pass it as\
+                a context variable')
+        self.adapter_class = getattr(view, 'adapter_class', None)
+
+        if not self.adapter_class:
+            raise serializers.ValidationError('Define adapter_class in view')
+
+        self.adapter = self.adapter_class()
+        app = self.adapter.get_provider().get_app(request)
+        token = self.adapter.parse_token({'access_token': access_token})
+        token.app = app
+
+        try:
+            login = self.adapter.complete_login(request, app, token,
+                                                response=access_token)
+            token.account = login.account
+            login.token = token
+            complete_social_login(request, login)
+        except HTTPError:
+            raise serializers.ValidationError('Incorrect value')
+
+        if not login.is_existing:
+            login.lookup()
+            login.save(request, connect=True)
+        self.object = {'user': login.account.user}
+
+        return attrs

rest_auth/registration/views.py

@@ -8,6 +8,8 @@ from allauth.account.utils import complete_signup
 from allauth.account import app_settings
 
 from rest_auth.serializers import UserDetailsSerializer
+from rest_auth.registration.serializers import SocialLoginSerializer
+from rest_auth.views import Login
 
 
 class Register(APIView, SignupView):
@@ -49,3 +51,16 @@ class VerifyEmail(APIView, ConfirmEmailView):
         confirmation = self.get_object()
         confirmation.confirm(self.request)
         return Response({'message': 'ok'}, status=status.HTTP_200_OK)
+
+
+class SocialLogin(Login):
+    """
+    class used for social authentications
+    example usage for facebook
+
+    from allauth.socialaccount.providers.facebook.views import FacebookOAuth2Adapter
+    class FacebookLogin(SocialLogin):
+        adapter_class = FacebookOAuth2Adapter
+    """
+
+    serializer_class = SocialLoginSerializer

rest_auth/views.py

@@ -48,13 +48,13 @@ class Login(LoggedOutRESTAPIView, GenericAPIView):
     response_serializer = TokenSerializer
 
     def get_serializer(self):
-        return self.serializer_class(data=self.request.DATA)
+        return self.serializer_class(data=self.request.DATA,
+            context={'request': self.request, 'view': self})
 
     def login(self):
         self.user = self.serializer.object['user']
         self.token, created = self.token_model.objects.get_or_create(
             user=self.user)
-
         if getattr(settings, 'REST_SESSION_LOGIN', True):
             login(self.request, self.user)
 
@@ -244,3 +244,5 @@ class PasswordChange(LoggedInRESTAPIView, GenericAPIView):
         else:
             return Response(serializer.errors,
                             status=status.HTTP_400_BAD_REQUEST)
+
+