view db/migrate/.svn/text-base/20090406161854_add_parent_id_to_enumerations.rb.svn-base @ 479:7be2c5d9ffa5 feature_36

correctly saving ONE authorship model when creating new publication.

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