Add user to serializer

JoinTheCityREST/app/Discussion/serializers.py

@@ -6,7 +6,7 @@ from app.User.serializers import UserSerializer
 class DiscussionSerializer(serializers.HyperlinkedModelSerializer):
     class Meta:
         model = Discussion
-        fields = ('url', 'question', 'message', 'tag')
+        fields = ('url', 'user', 'question', 'message', 'tag')
 
 class TextMessageSerializer(serializers.HyperlinkedModelSerializer):
     class Meta: