There's probably more jobs in PHP than rails, but I'm guessing it won't make your list. I'd say build some small application in rails, so you can point at it a

There's probably more jobs in PHP than rails, but I'm guessing it won't make your list. I'd say build some small application in rails, so you can point at it and say "I'm not an expert, but I was able to build that in two days." Then go ahead and learn Go, or whatever you want. In my experience, most people care if you can code, and don't care as much if you're good at Ruby/Rails.