Rails - routes

Small notes

In computer science a path is relative whereas a url is absolute In rails you’ve got helper to have your user navigating into differents link.

One of the key differences between the path and url helper are as the rails guide said :

photos_path returns /photos
photos_path returns /photos
new_photo_path returns /photos/new

Each of these helpers has a corresponding _url helper (such as photos_url) which returns the same path prefixed with the current host, port, and path prefix.

To recap the situation you will probably have relative url (_path) in view while you’ll be using _url helper in controller with redirect_to. Another use of _url helper is for email template, it is a bit like a redirect a the end : you need to make your user naviguating from one place (the email inbox) to another (your website, or another one)