真实或错误的评级系统

We want to implement a system in our Rails app that allows users to rate posts as True or False. Upon user click of True, that will add one vote to the True count for that post. We want to set this system up so that if a user has already clicked True, but wants to switch to False, they can click False, and that vote will transfer over to the False column count, immediately on the client side.We want to implement a system in our Rails app