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root / db / migrate / 20090406161854_add_parent_id_to_enumerations.rb @ 912:5e80956cc792

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


    		
  

  

    
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    remove_column :enumerations, :parent_id


    		
  

  

    
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  end


    		
  

  

    
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end