class <%= class_name %> < ActiveRecord::Migration def self.up <% if model -%> create_table :<%= table_name %> do |t| <% attributes.each do |type, name| -%> t.<%= name %> :<%= type %> <% end -%> t.timestamps end <% end -%> end def self.down <% if model -%> drop_table :<%= table_name %> <% end -%> end end