From 9d1783f34470d144d82a805b71de4cca75348c42 Mon Sep 17 00:00:00 2001
From: gwen <gwenaelremond@free.fr>
Date: Sat, 6 Jul 2024 14:49:54 +0200
Subject: [PATCH] add optional param in the schema. first step

ref #22
---
 src/rougail/object_model.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/rougail/object_model.py b/src/rougail/object_model.py
index 03f429cbd..cab67681d 100644
--- a/src/rougail/object_model.py
+++ b/src/rougail/object_model.py
@@ -369,6 +369,7 @@ class VariableCalculation(Calculation):
     variable: StrictStr
     propertyerror: bool = True
     allow_none: bool = False
+    optional: bool = False
 
     def get_params(self,
                    objectspace,