update article create/update status code

server/apps/research/views.py

@@ -43,6 +43,8 @@ def create(self, request, *args, **kwargs):
             return Response(serializer.data, status=status.HTTP_201_CREATED)
         except Exception as e:
             logger.error(f"Unexpected error during article creation: {e}")
+            if isinstance(e, serializers.ValidationError):
+                return Response({'error': str(e)}, status=status.HTTP_400_BAD_REQUEST)
             return Response({'error': 'Failed to create a new Article'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
     def update(self, request, *args, **kwargs):
@@ -53,8 +55,10 @@ def update(self, request, *args, **kwargs):
             serializer.is_valid(raise_exception=True)
             self.perform_update(serializer)
             return Response(serializer.data, status=status.HTTP_200_OK)
-        except Exception as e:
+        except Exception as e:                 
             logger.error(f"Unexpected error during article update: {e}")
+            if isinstance(e, serializers.ValidationError):
+                return Response({'error': str(e)}, status=status.HTTP_400_BAD_REQUEST)       
             return Response({'error': 'Error updating article'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
     # Custom action to retrieve articles by slug or UUID