Different serializers for channel Get & Post

apps/api/serializers.py

@@ -117,13 +117,26 @@ class SubscriptionSerializer(DynamicModelSerializer):
         fields = ("uuid", "name", "rss_url", "image", "server", "creation_datetime")
 
 
-class SubscriptionChannelSerializer(DynamicModelSerializer):
+class SubscriptionChannelSerializerGET(DynamicModelSerializer):
     """
     Serializer for the SubscriptionChannel Model.
+    This serializer should be used with GET requests.
     """
 
-    # subscription = serializers.PrimaryKeyRelatedField(queryset=Subscription.objects.all())
+    subscription = SubscriptionSerializer()
-    subscription = SubscriptionSerializer(read_only=True)
+
+    class Meta:
+        model = SubscriptionChannel
+        fields = ("uuid", "id", "subscription", "creation_datetime")
+
+
+class SubscriptionChannelSerializerPOST(DynamicModelSerializer):
+    """
+    Serializer for the SubscriptionChannel Model.
+    This serializer should be used with POST requests.
+    """
+
+    subscription = serializers.PrimaryKeyRelatedField(queryset=Subscription.objects.all())
 
     class Meta:
         model = SubscriptionChannel

apps/api/views.py

@@ -11,7 +11,12 @@ from rest_framework.authentication import SessionAuthentication, TokenAuthentica
 from rest_framework.parsers import MultiPartParser, FormParser
 
 from apps.home.models import Subscription, SubscriptionChannel, TrackedContent
-from .serializers import SubscriptionSerializer, SubscriptionChannelSerializer, TrackedContentSerializer
+from .serializers import (
+    SubscriptionSerializer,
+    SubscriptionChannelSerializerGET,
+    SubscriptionChannelSerializerPOST,
+    TrackedContentSerializer
+    )
 
 
 log = logging.getLogger(__name__)
@@ -95,13 +100,19 @@ class SubscriptionChannel_ListView(generics.ListCreateAPIView):
     permission_classes = [permissions.IsAuthenticated]
 
     pagination_class = DefaultPagination
-    serializer_class = SubscriptionChannelSerializer
+    # serializer_class = SubscriptionChannelSerializer
     queryset = SubscriptionChannel.objects.all().order_by("-creation_datetime")
 
     filter_backends = [rest_filters.DjangoFilterBackend, filters.OrderingFilter]
     filterset_fields = ["uuid", "id", "subscription", "subscription__server"]
     ordering_fields = ["creation_datetime"]
 
+    def get_serializer(self, *args, **kwargs):
+        if self.request.method == "POST":
+            return SubscriptionChannelSerializerPOST(*args, **kwargs)
+        else:
+            return SubscriptionChannelSerializerGET(*args, **kwargs)
+
     def post(self, request):
         serializer = self.get_serializer(data=request.data)
         serializer.is_valid(raise_exception=True)
@@ -116,6 +127,11 @@ class SubscriptionChannel_ListView(generics.ListCreateAPIView):
                 exception=True
             )
 
+        # Switch to the GET serializer for return data, as it contains more data on the subscription.
+        # We can't modify the POST serializer to contain this data, otherwise it expects it in POST.
+        self.request.method = "GET"
+        serializer = self.get_serializer(serializer.instance)
+
         headers = self.get_success_headers(serializer.data)
         return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
 
@@ -131,7 +147,7 @@ class SubscriptionChannel_DetailView(generics.RetrieveDestroyAPIView):
     permission_classes = [permissions.IsAuthenticated]
     parser_classes = [MultiPartParser, FormParser]
 
-    serializer_class = SubscriptionChannelSerializer
+    serializer_class = SubscriptionChannelSerializerGET
     queryset = SubscriptionChannel.objects.all().order_by("-creation_datetime")
 
     def post(self, request):