class RemoveFaxDocumentableFromFaxDocuments < ActiveRecord::Migration def up remove_column :fax_documents, :fax_documentable_type remove_column :fax_documents, :fax_documentable_id end def down add_column :fax_documents, :fax_documentable_id, :integer add_column :fax_documents, :fax_documentable_type, :string end end