view db/migrate/048_allow_null_version_effective_date.rb @ 1543:05d639e5d59b feature_1136

First cut of a git export script

class AllowNullVersionEffectiveDate < ActiveRecord::Migration
  def self.up
    change_column :versions, :effective_date, :date, :default => nil, :null => true
  end

  def self.down
    raise IrreversibleMigration
  end
end