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Diffstat (limited to 'activerecord/lib/active_record/mixins/tree.rb')
| -rw-r--r-- | activerecord/lib/active_record/mixins/tree.rb | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/activerecord/lib/active_record/mixins/tree.rb b/activerecord/lib/active_record/mixins/tree.rb deleted file mode 100644 index 141bbb1806..0000000000 --- a/activerecord/lib/active_record/mixins/tree.rb +++ /dev/null @@ -1,40 +0,0 @@ -module ActiveRecord - module Mixins - # Including this mixin if you want to model a tree structure by providing a parent association and an children - # association. This mixin assumes that you have a column called parent_id - # - # class Category < ActiveRecord::Base - # include ActiveRecord::Mixins::Tree - # end - # - # Example : - # root - # \_ child1 - # \_ sub-child1 - # - # 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 - module Tree - def self.append_features(base) - super - base.extend(ClassMethods) - end - end - - module ClassMethods - def acts_as_tree(options = {}) - configuration = { :foreign_key => "parent_id", :order => nil } - configuration.update(options) if options.is_a?(Hash) - - belongs_to :parent, :class_name => name, :foreign_key => configuration[:foreign_key] - has_many :children, :class_name => name, :foreign_key => configuration[:foreign_key], :order => configuration[:order], :dependent => true - end - end - end -end
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