Chris@0: ActsAsList
Chris@0: ==========
Chris@0: 
Chris@0: This acts_as extension provides the capabilities for sorting and reordering a number of objects in a list. The class that has this specified needs to have a +position+ column defined as an integer on the mapped database table.
Chris@0: 
Chris@0: 
Chris@0: Example
Chris@0: =======
Chris@0: 
Chris@0:   class TodoList < ActiveRecord::Base
Chris@0:     has_many :todo_items, :order => "position"
Chris@0:   end
Chris@0: 
Chris@0:   class TodoItem < ActiveRecord::Base
Chris@0:     belongs_to :todo_list
Chris@0:     acts_as_list :scope => :todo_list
Chris@0:   end
Chris@0: 
Chris@0:   todo_list.first.move_to_bottom
Chris@0:   todo_list.last.move_higher
Chris@0: 
Chris@0: 
Chris@0: Copyright (c) 2007 David Heinemeier Hansson, released under the MIT license