Hi,
I've created a project that provides single sign-on between Rails and web apps. I've written a plugin for Wordpress, and am 3/4 of the way done with an extension to El Dorado for it.
What this does is, one's original Rails app stays in control of authentication and controlling when a user is logged in and out. The Rails plugin assumes that the Rails app uses the standard pattern of saving a user object id in the session.
The plugin then provides a web server API that plugins into other apps can query to determine if the user is logged in, and if so, what their user info is. This is the part that I've been working on for El Dorado.
Is this interesting to anyone? My project page is at: http://greenfabric.com/page/integration_api_hom...