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development commit - changing association validations. not working correctly
author luisf <luis.figueira@eecs.qmul.ac.uk>
date Fri, 14 Dec 2012 19:50:00 +0000
parents cbb26bc654de
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