1 files changed, 6 insertions, 1 deletions
diff --git a/ishtar_common/views_item.py b/ishtar_common/views_item.py
index b30a9e525..cecc0318d 100644
--- a/ishtar_common/views_item.py
+++ b/ishtar_common/views_item.py
@@ -446,9 +446,14 @@ def filter_sheet(ishtar_user, item):
         keys += base_keys
     if exclude:
         for key in keys:
+            param = getattr(item, key, None)
+            if hasattr(param, "count"):
+                # set a key_not_available variable in order to filter on the
+                # sheet non setable variable such as queryset or properties
+                setattr(item, key + "_not_available", True)
             try:
                 setattr(item, key, None)
-            except TypeError:
+            except (TypeError, AttributeError):
                 pass
         return item
     new_item = type("BaseObject", (object,), {})