[#1162] Add new field: last_value in ListPendingFormData serializer

get the last value from data where UUID equal with pending data and order by created DESC

backend/api/v1/v1_data/serializers.py

@@ -442,6 +442,7 @@ def __init__(self, **kwargs):
 class ListPendingDataAnswerSerializer(serializers.ModelSerializer):
     history = serializers.SerializerMethodField()
     value = serializers.SerializerMethodField()
+    last_value = serializers.SerializerMethodField()
 
     @extend_schema_field(AnswerHistorySerializer(many=True))
     def get_history(self, instance):
@@ -457,9 +458,19 @@ def get_history(self, instance):
     def get_value(self, instance: Answers):
         return get_answer_value(instance)
 
+    @extend_schema_field(OpenApiTypes.ANY)
+    def get_last_value(self, instance: Answers):
+        if self.context['last_data']:
+            answer = self.context['last_data'].data_answer.filter(
+                question=instance.question
+            ).first()
+            if answer:
+                return get_answer_value(answer=answer)
+        return None
+
     class Meta:
         model = PendingAnswers
-        fields = ["history", "question", "value"]
+        fields = ["history", "question", "value", "last_value"]
 
 
 class PendingBatchDataFilterSerializer(serializers.Serializer):

backend/api/v1/v1_data/views.py

@@ -852,11 +852,16 @@ class PendingDataDetailDeleteView(APIView):
                    summary='To get list of answers for pending data')
     def get(self, request, pending_data_id, version):
         data = get_object_or_404(PendingFormData, pk=pending_data_id)
+        last_data = FormData.objects.filter(uuid=data.uuid)\
+            .order_by('-created').first()
         return Response(
             ListPendingDataAnswerSerializer(
+                context={'last_data': last_data},
                 instance=data.pending_data_answer.all(),
-                many=True).data,
-            status=status.HTTP_200_OK)
+                many=True
+            ).data,
+            status=status.HTTP_200_OK
+        )
 
     @extend_schema(
         responses={