# File lib/puppet/rails/database/001_add_created_at_to_all_tables.rb, line 2
2:   def self.up
3:     ActiveRecord::Base.connection.tables.each do |t|
4:       add_column t.to_s, :created_at, :datetime unless ActiveRecord::Base.connection.columns(t).collect {|c| c.name}.include?("created_at")
5:     end
6:   end