Building Passwordless Email Auth in Rails: Magic links are less magical than you might think

I’m working on a new Rails app, and I finally got to the part where I need to figure out how I’m going to handle authentication.What’ll it be this time? I could:Depend on Devise, which is popular and feature-rich, but is so complex that—if I’m being honest—I would never understand how my own app’s authentication system workedOutsource identity management to an OAuth service like Google, Facebook, Twitter, or GitHub, whether by using an omniauth adapter or by rolling my own.