view db/migrate/048_allow_null_version_effective_date.rb @ 1550:7d825cbd76c8 feature_1136

Ensure we don't leave a git repo lying around for a repo with no corresponding (even if empty) authormap

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