For private_location, nonempty_str! handles the check. For firewall, don't actually need the check, as a missing parameter will result an error, and should only happen if the user is monkeying with the form.
For private_location, nonempty_str! handles the check. For firewall, don't actually need the check, as a missing parameter will result an error, and should only happen if the user is monkeying with the form.