Add a Record History option in the Channel configuration form

fix #3269

1 files changed, 10 insertions, 0 deletions

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};
 };