class AddFilenameToPatch < ActiveRecord::Migration
  def self.up
    add_column :patches, :filename, :string, :limit => 80
    Patch.find(:all).each do |p|
      p.filename = p.title.downcase.gsub(/[^A-Za-z0-9-]/, '_')
      p.save
    end
  end

  def self.down
    remove_column :patches, :filename
  end
end