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view db/migrate/20090406161854_add_parent_id_to_enumerations.rb @ 398:c4a0942f2897 cannam-pre-20110113-merge

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Merge
author Chris Cannam <chris.cannam@soundsoftware.ac.uk>
date Mon, 11 Apr 2011 18:03:30 +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