Here's a small web app I created to see what problems one might face on showing real time analytics using Daru in Rails.
http://daru-rails.herokuapp.com/codesI found out it was quite easy to make Daru work with Rails. You can follow the link, click the "New Code" button and add a name with number of code lines written by the user. On clicking "Create code" and the "back" you can now see the resultant vector shown using Daru::Vector.
It took like only 4 lines of code to link Active Record with Daru. But for more optimization I think we might need some work. But I'm confident that all the functionality of Daru can work without any effort in Rails.
Another important part which I want to accomplish is to try drawing plots using Nyaplot. "Nyaplot_on_web" doesn't seem to help here because we require something that could generate html for the directly. I will take a thorough look at that.