From 8d73ddf73ffc2cefbe16ca06970377e13d4bead0 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Lang Date: Thu, 26 Apr 2012 17:23:24 +0000 Subject: Moved Rails plugins required by the core to lib/plugins. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9533 e93f8b46-1217-0410-a6f0-8f06a7374b81 --- lib/plugins/acts_as_tree/README | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 lib/plugins/acts_as_tree/README (limited to 'lib/plugins/acts_as_tree/README') diff --git a/lib/plugins/acts_as_tree/README b/lib/plugins/acts_as_tree/README new file mode 100644 index 000000000..a6cc6a904 --- /dev/null +++ b/lib/plugins/acts_as_tree/README @@ -0,0 +1,26 @@ +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 \ No newline at end of file -- cgit v1.2.3