Rubu auth without gems

Hello, i'm new to the forum and I am in urgent need of help.

I have a client that is asking to change the basic auth in his rails app to an auth that uses a web form, in a page, instead of an ugly browser popup. I need to do it without using gems. Today the app uses basic auth and everytime the ugly browser popup appears asking username and password.

The system has an admin group and a normal user group.

Hey Ivan,

I haven't covered this yet on GoRails, but I should. This is a good tutorial to follow if you want to build auth from scratch. https://medium.com/@wintermeyer/authentication-from-scratch-with-rails-5-2-92d8676f6836