obsolete.ChilliProject/vendor/plugins/acts_as_tree
Jean-Philippe Lang ec7d135930 Adds child_pages macro for wiki pages (#528).
git-svn-id: http://redmine.rubyforge.org/svn/trunk@1699 e93f8b46-1217-0410-a6f0-8f06a7374b81
2008-07-26 12:54:54 +00:00
..
lib/active_record/acts Adds child_pages macro for wiki pages (#528). 2008-07-26 12:54:54 +00:00
test Merged Rails 2.0 compatibility changes. 2007-12-10 17:58:07 +00:00
README Merged Rails 2.0 compatibility changes. 2007-12-10 17:58:07 +00:00
Rakefile Merged Rails 2.0 compatibility changes. 2007-12-10 17:58:07 +00:00
init.rb Merged Rails 2.0 compatibility changes. 2007-12-10 17:58:07 +00:00

README

acts_as_tree
============

Specify this +acts_as+ extension if you want to model a tree structure by providing a parent association and a children
association. This requires that you have a foreign key column, which by default is called +parent_id+.

  class Category < ActiveRecord::Base
    acts_as_tree :order => "name"
  end

  Example:
  root
   \_ child1
        \_ subchild1
        \_ subchild2

  root      = Category.create("name" => "root")
  child1    = root.children.create("name" => "child1")
  subchild1 = child1.children.create("name" => "subchild1")

  root.parent   # => nil
  child1.parent # => root
  root.children # => [child1]
  root.children.first.children.first # => subchild1

Copyright (c) 2007 David Heinemeier Hansson, released under the MIT license