Formencode and empty values

Question

How can I write a custom validator which is always executed, even when the user has submitted an empty or missing value?

I've tried overriding the to_python, validate_python, _to_python, _validate_python (and more) methods but none of these seem to get run if the user has submitted an empty or None value

Answer 1

I ended up moving from FormEncode to WTForms and everything is now a whole lot easier. Seems to me like Formencode wasn't very well thought out.