bigdir/db/migrate/20110408103312_add_roles_issues_visibility.rb

class AddRolesIssuesVisibility < ActiveRecord::Migration
  def self.up
    add_column :roles, :issues_visibility, :string, :limit => 30, :default => 'default', :null => false
  end

  def self.down
    remove_column :roles, :issues_visibility
  end
end