Don't Interrupt Actions When Users Login

I've done my part to fix it, by the way. Here's the introduction to Section 6.5 in my book RailsSpace:

6.5 Friendly URL forwarding

There’s one final flourish we’d like to add to our basic login functionality. One of our pet peeves is when we go to the front page of a site, click on a link for a protected page, are prompted to log in, and then get forwarded back to the front page rather than to the protected page we originally requested. This is lame, lame, lame. Obviously, the site should remember the protected page we requested and then forward us there after logging in. Let’s implement (and test) this feature, which we call “friendly forwarding.”