I've got a pure, working, Rails application hosted on Heroku and another on EngineYard.
I now need it to start communicating with another application. This application exposes that exposes a SOAP interface. How can I connect to the API in my rails app?
I won't claim this answer, try this response to a similar question.
What's the best way to use SOAP with Ruby?
This might be a good place to start: http://www.tutorialspoint.com/ruby/ruby_web_services.htm