How to rescue page not found 404 in rails?

Question

How to rescue page not found if user add wrong url in rails. I hope to show 404 page present in public folder if the url is invalid. How to do that? I was browsing about it

Answer 1

Solution for Rails 4

On routes.rb:

get '*unmatched_route', to: 'application#not_found'

On application_controller.rb:

def not_found
  # Your exception handling code here
end