view db/migrate/104_add_projects_lft_and_rgt.rb @ 671:9fabf0da3b09 live

Select only the columns named in the GROUP BY clause, fixing #289

class AddProjectsLftAndRgt < ActiveRecord::Migration
  def self.up
    add_column :projects, :lft, :integer
    add_column :projects, :rgt, :integer
  end

  def self.down
    remove_column :projects, :lft
    remove_column :projects, :rgt
  end
end