Chris@1295: class CreateProjectsTrackers < ActiveRecord::Migration
Chris@1295:   def self.up
Chris@1295:     create_table :projects_trackers, :id => false do |t|
Chris@1295:       t.column :project_id, :integer, :default => 0, :null => false
Chris@1295:       t.column :tracker_id, :integer, :default => 0, :null => false
Chris@1295:     end
Chris@1295:     add_index :projects_trackers, :project_id, :name => :projects_trackers_project_id
Chris@1295: 
Chris@1295:     # Associates all trackers to all projects (as it was before)
Chris@1295:     tracker_ids = Tracker.all.collect(&:id)
Chris@1295:     Project.all.each do |project|
Chris@1295:       project.tracker_ids = tracker_ids
Chris@1295:     end
Chris@1295:   end
Chris@1295: 
Chris@1295:   def self.down
Chris@1295:     drop_table :projects_trackers
Chris@1295:   end
Chris@1295: end