Rails optional /:locale route

Question

I\'m trying to setup a routing system for my rails app that allows for an optional route (/:locale) to be allowed to the base of the website.

So more or less:

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Answer 1

What I usually do is, in config/routes.rb:

MyApp::Application.routes.draw do

  scope "(:locale)", :locale => /en|fr/ do
    #here only two languages are accepted: english and french

  end
end

And in my ApplicationController:

before_filter :set_locale

def set_locale
  I18n.locale = params[:locale] || "en"
end