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view db/migrate/20090406161854_add_parent_id_to_enumerations.rb @ 657:a4775b8e352f feature_36

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Merge from 655:1ee95265342f
author luisf <luis.figueira@eecs.qmul.ac.uk>
date Fri, 09 Sep 2011 14:55:14 +0100
parents 513646585e45
children
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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