Rails Boilerplate | How to Configure Sign in With Apple in Rails 8

There are a couple of reasons you might want to setup "Sign in with Apple" in Rails 8 without using Omniauth. You don't want to use Omniauth You want to use the latest Apple authentication API and more importantly, the latest version of the nice looking button. I just wanted the button. But another reason you might want to do this is if you want to learn a bit more about the general OAuth flow and the weird quirks of the Apple API.