Rails is a good choice for your server-side code and will stay in fashion for a good while I suspect. Don't forget that you're also going to want to know javas

Rails is a good choice for your server-side code and will stay in fashion for a good while I suspect. Don't forget that you're also going to want to know javascript for your front-end development. I suspect node.js is going to come on strong over the next few years, but in most discussions I've been having recently, everybody I've spoken to still feels it's a bit to early to jump on that bandwagon. But if you want to get ahead of the curve, node might be the ticket.