How to fix session closing in Ruby on Rails???

Question

Ruby on Rails

I want to create a hits table.
So, at the entrance, when we set the session: session[:user_id] = '1', and when it exits by clicking on the exit, we destroy it, and so we get to fix the entrance and exit.
But how can you fix the exit if the user exited without clicking on the exit, but simply by closing the browser, or without closing, the main thing is that he became inactive???

Answer 1

Track the user's activity, if he was inactive for a while, then he left / closed the browser / closed the tab / formatted the hard drive / went to live in the forest.