edit assignment

apps/pos_device/web/api/v1/serilaizers/client.py

@@ -13,7 +13,7 @@ class POSClientSerializer(ModelSerializer):
         org = attrs['organization']
 
         # check for duplicate organization client
-        if org:
+        if not self.instance and org:
             if self.Meta.model.objects.filter(organization=org).exists():
                 raise APIException("قبلا کلاینت با این سازمان ثبت شده است", code=status.HTTP_403_FORBIDDEN)  # noqa
 

apps/pos_device/web/api/v1/serilaizers/device.py

@@ -56,6 +56,7 @@ class DeviceAssignmentSerializer(ModelSerializer):
         device = attrs['device']
         client = attrs['client']
 
+        if not self.instance:
             if self.Meta.model.objects.filter(device=device, client=client).exists():
                 raise pos_exceptions.DeviceAlreadyAssigned()
 

apps/pos_device/web/api/v1/viewsets/device.py

@@ -207,6 +207,27 @@ class DeviceAssignmentViewSet(viewsets.ModelViewSet):
             return Response(serializer.data, status=status.HTTP_201_CREATED)
         return Response(serializer.errors, status=status.HTTP_403_FORBIDDEN)
 
+    @transaction.atomic
+    def update(self, request, pk=None, *args, **kwargs):
+        """ edit assignment """
+        assignment = self.get_object()
+
+        if 'client_data' in request.data.keys():
+            client = CustomOperations().custom_update(
+                request=request,
+                view=POSClientViewSet(),
+                data_key='client_data',
+                obj_id=request.data['client_data']['id']
+            )
+            request.data.update({'client': client['id']})
+
+        serializer = self.serializer_class(data=request.data, instance=assignment, partial=True)
+        if serializer.is_valid():
+            assignment = serializer.save()
+
+            return Response(serializer.data, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_403_FORBIDDEN)
+
     @action(
         methods=['get'],
         detail=False,