Path: | README.rdoc |
Last Update: | Sat Jan 16 11:26:08 +0100 2010 |
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.
gem install acts_as_tree --source http://gemcutter.org
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