The first ruby funday held on 22nd Nov 2008 in New Delhi, India. I presented on faceted search using ultrasphinx. I also gave a live demo there. Here are the slides: Facet Searching using Ultrasphinx View SlideShare presentation or Upload your own. (tags: sphinx ultrasphinx) You can ask me if you have any doubt.
As far as I know there are very few people working on RubyOnRails in India. Vinayak solutions Pvt. Ltd. is doing great in this field. Recently Manik Juneja (Director) attended the Rails conf. Landon and last week traveled Colombo to train a team of web programmers on Ruby on Rails.