Don't replace spaces with tabs in your .yml files! It does not work. How rubbish is that? yml has to be indented, but you must indent with spaces, and not tabs. This is not something specific to rails though, tabs are forbidden in yml. Annoying, a thing that you can't see... This explains why all rails developers use two spaces instead of actual tabs.
Paul Clarke's blog - I live in Hythe near Folkestone. Married to Clare + dad to 2, I am a full-stack web developr, and I do js / Node, some ruby, python, php ect ect. I like pubs, running, eating, home automation + other diy jiggery-pokery, history, family tree stuff, TV, squirrels, pirates, lego, and TIME TRAVEL.