_form.rhtml isn't being updated automatically

Scaffolding in the Controller (:scaffold) looks at the DB tables on
the fly and constructs the index, show and edit forms based on the
columns found. If you generate the scaffolding code (./script/
generate scaffold) it writes the current information into the files
within the project, so any updates to the DB will not be reflected.

At least that's my recollection. You quickly out grow
scaffolding.....

Andrew