Spend some time working through this if you want to learn Rails.

http://ruby.railstutorial.org/ruby-on-rails-tutorial-book?ve...

Also, bugger recruiters, what do they know? Talking to a recruiter usually means there are at least two people between you and anyone actually on the product team. Real experience in the trenches really getting things done is valuable. You can always learn another language, framework, library, whatever you need.