How to implement a singleton model

Question

I have a site in rails and want to have site-wide settings. One part of my app can notify the admin by SMS if a specific event happens. This is an example of a feature that

Answer 1

I know this is an old thread, but I just needed the same thing and found out that there's a gem for this: acts_as_singleton.

Installation instructions are for Rails 2, but it works great with Rails 3 too.