--- /dev/null
+class <%= class_name.underscore.camelize %> < ActiveRecord::Migration
+ def self.up<% attributes.each do |attribute| %>
+ <%= migration_action %>_column :<%= table_name %>, :<%= attribute.name %><% if migration_action == 'add' %>, :<%= attribute.type %><% end -%>
+ <%- end %>
+ end
+
+ def self.down<% attributes.reverse.each do |attribute| %>
+ <%= migration_action == 'add' ? 'remove' : 'add' %>_column :<%= table_name %>, :<%= attribute.name %><% if migration_action == 'remove' %>, :<%= attribute.type %><% end -%>
+ <%- end %>
+ end
+end