This works with Rails 3 and rails 3 fork of ActiveScaffold:
http://github.com/vhochstein/active_scaffold

Usage:
active_scaffold :model do |conf|
  conf.actions.add :config_list
end


Overview

A plugin for Active Scaffold that provides the ability to choose the column to show in the scaffold list at run-time

The configuration data will be saved on the session.


Rails 3.0 Gem:
gem 'active_scaffold_config_list_vho'
or
gem 'active_scaffold_config_list_vho', :git => 'git://github.com/vhochstein/active_scaffold_config_list.git', :branch => 'rails-3.0'

Rails 3.1 Gem:
gem 'active_scaffold_config_list_vho'
or
gem 'active_scaffold_config_list_vho', :git => 'git://github.com/vhochstein/active_scaffold_config_list.git'