# File lib/puppet/rails/database/001_add_created_at_to_all_tables.rb, line 8
 8:   def self.down
 9:     ActiveRecord::Base.connection.tables.each do |t|
10:       remove_column t.to_s, :created_at unless ActiveRecord::Base.connection.columns(t).collect {|c| c.name}.include?("created_at")
11:     end
12:   end