How to achieve JSF 2.0 UI magic (Primefaces) In Ruby on Rails

Question 1) I would like to know if a ruby ​​on rails has gems with functionality similar to primary. why i ask

if you go with files ( http://www.primefaces.org/showcase-labs/ui/home.jsf ) the developer does not need to worry about javascript or jquery stuffs.

As far as I know, JSF is a specification, based on the specification of various available implementations, primefaces is the ui framework for these implementations, there are so many components based on jquery and javascript libs in elements. More or less simple fonts just serve as a javascript browser. I use simple elements, you mainly focus on business logic, no need to worry about the user interface.

i was heavily inspired by the ruby ​​on the rails, and there are many gems.

what my question is: is there a ruddy or user interface for rubies on rails, similar to user interface magic driven by interfaces

note: I'm not looking for pure jquery or dojo, I'm looking for components for the component interface for rubies on rails. The guys who worked on projects using boards and projects using rails will understand my question 100%.

Question 2) I would like to know a list of gems associated with the user interface. what I am asking is to create a very niche ruby ​​user interface on rails, what materials are needed (frameworks or gems).