view db/migrate/20090406161854_add_parent_id_to_enumerations.rb @ 643:505fdac73166 feature_36

Feature #253: Created the placholder templates and class method to send notifications after creation.

class AddParentIdToEnumerations < ActiveRecord::Migration
  def self.up
    add_column :enumerations, :parent_id, :integer, :null => true, :default => nil
  end

  def self.down
    remove_column :enumerations, :parent_id
  end
end