Chris@909: class AddProjectsLftAndRgt < ActiveRecord::Migration
Chris@909:   def self.up
Chris@909:     add_column :projects, :lft, :integer
Chris@909:     add_column :projects, :rgt, :integer
Chris@909:   end
Chris@909: 
Chris@909:   def self.down
Chris@909:     remove_column :projects, :lft
Chris@909:     remove_column :projects, :rgt
Chris@909:   end
Chris@909: end