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Merged r6030 from trunk. PDF: Import DejaVu fonts. http://rfpdf.googlecode.com/files/DejaVu.zip Sep. 2007 fils size 3,685,721 md5sum: 54274d105b74f817d649035fc1541d8a rename files. * DejaVuSans.rb to dejavusans.rb * DejaVuSansb.rb to dejavusansb.rb * DejaVuSansi.rb to dejavusansi.rb git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.2-stable@6032 e93f8b46-1217-0410-a6f0-8f06a7374b81
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README
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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