I have multiple fields in a record that I want to be always generated on insert, never modified on update. Typical use case is a record creation timestamp; a default of request.now is perfect, I don't want anyone to ever override it, and I do want to get an error if accidentally trying to change it.
I am aware this is not hacker-proof (can directly access the underlying database) and not even slightly malicious user proof (the field object can be modified) -- just an enforced reminder to self. Is there a way to have a "required_not_to_be_specified" setting for a field?
