Js.app is a project mainly written in RUBY and JAVASCRIPT, it's free.
Proof of concept rack app for easing development of a mvc client in javascript
This is a sample Rails 3 app tooled to use js-model, Sammy.js & haml-js as a clientside mvc framework.
pre. bundle install rails server
The javascript app is served in a single file.
pre. localhost:3000/javascripts/app.js
Models & controllers are stored in app/javascripts just like a rails app.
pre. models/events.js controllers/events_controller.js
Views are stored in public/javascripts/app/views/events/index.haml. Still evaluating js templating options.
There is nothing in the rails app, filling those views with data is left up to the viewer.