brendanlim / acts_as_tree forked from rails/acts_as_tree

ActsAsTree plugin

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file README Mon Sep 10 20:01:25 -0700 2007 Turned ActiveRecord::Acts::Tree into a plugin #... [dhh]
file Rakefile Mon Sep 10 22:46:43 -0700 2007 Fix generic file name in main load path. [jeremy]
file init.rb Mon Sep 10 22:46:43 -0700 2007 Fix generic file name in main load path. [jeremy]
directory lib/ Loading commit data...
directory test/ Tue Sep 11 14:33:06 -0700 2007 Tests needn't run within an app. Closes #9534 [... [jeremy]
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