From e75d7ad8ea72044fdfd2317e03f91ba5bea06b86 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Fri, 16 Jun 2017 10:48:54 +0200
Subject: Add a Record History option in the Channel configuration form

fix #3269
---
 src/utils/optional_bool.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/utils')

diff --git a/src/utils/optional_bool.hpp b/src/utils/optional_bool.hpp
index 824e76d..59bbbab 100644
--- a/src/utils/optional_bool.hpp
+++ b/src/utils/optional_bool.hpp
@@ -20,6 +20,16 @@ struct OptionalBool
     this->is_set = false;
   }
 
+  std::string to_string()
+  {
+    if (this->is_set == false)
+      return "unset";
+    else if (this->value)
+      return "true";
+    else
+      return "false";
+  }
+
   bool is_set{false};
   bool value{false};
 };
-- 
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