Any example of a Ruby on Rails app connected with Bonita ?

Does anyone has an example, that he/she can share, of a Ruby on Rails small app connected with Bonita ?
Thanks a lot !

Issues to create a contract on Bonita BPM 7.1.0 documentation.

I am studying the Bonita BPM 7.1.0 documentation by following the tutorial to understand how to create new applications Workflow. Even would like to congratulate once again all staff BonitaSoft, I get more and more excited about the tool. During these studies, I found a part of the documentation that may have been a little misunderstanding.