As mentioned, if you want to continue using Streamlined, you're
probably best off sticking with Rails 2.1, or even 1.2.
Otherwise, you should consider migrating to ActiveScaffold, or
combining a controller plugin and a view plugin. For the controller
side, the make_resourceful plugin is popular, as is
inherited_resources. I've been working on my own, called crud_actions
(
http://github.com/boochtek/rails-crud_actions), but it's still very
rough at this time. Feel free to fork it if you find it useful.
For the view side, I'm looking to use formtastic, which looks pretty
close to what I was planning to implement myself. In some ways, it's
similar to the way Streamlined UI definitions work; I think the syntax
is actually cleaner, and better situated in the view itself. However,
it's only for forms, and doesn't handle show or index views. I plan to
implement a similar pattern for show and index views myself.
Craig Buchek
BoochTek, LLC