Chris@909: class CreateGroupsUsers < ActiveRecord::Migration
Chris@909:   def self.up
Chris@909:     create_table :groups_users, :id => false do |t|
Chris@909:       t.column :group_id, :integer, :null => false
Chris@909:       t.column :user_id, :integer, :null => false
Chris@909:     end
Chris@909:     add_index :groups_users, [:group_id, :user_id], :unique => true, :name => :groups_users_ids
Chris@909:   end
Chris@909: 
Chris@909:   def self.down
Chris@909:     drop_table :groups_users
Chris@909:   end
Chris@909: end