Chris@0: class AddLftAndRgtIndexesToProjects < ActiveRecord::Migration
Chris@0:   def self.up
Chris@0:     add_index :projects, :lft
Chris@0:     add_index :projects, :rgt
Chris@0:   end
Chris@0: 
Chris@0:   def self.down
Chris@0:     remove_index :projects, :lft
Chris@0:     remove_index :projects, :rgt
Chris@0:   end
Chris@0: end