Theoretically; Ruby on Rails Token is not actually a separate programming framework.
In Ruby on Rails; there is a concept called Token, which is a Cross Site Request Forgery.
The CSRF Token
The CSRF Token was created as a security feature in Rails.
A Publishers Server sends such token in each response for a GET request.
The browser sends back the token in a POST request.
Via this token, the Server detects this is as a valid post request and not an attack from other websites.
Since Version 3; Ruby on Rails have included the CSRF tokens specifically to avoid Cross Site Request Forgery from occurring, as much as possible; one of many benefs of the Rails framework.