class GovernorCreateComments < ActiveRecord::Migration def self.up create_table :comments do |t| t.string :title, :content t.boolean :hidden, :default => false t.references :commenter, :polymorphic => true t.references :<%= mapping.singular %> t.timestamps end create_table :guests do |t| t.string :name t.string :email t.string :website t.timestamps end end def self.down drop_table :comments drop_table :guests end end