How to set defaults for parameters of url helper methods?

Question

I use language code as a prefix, e.g. www.mydomain.com/en/posts/1. This is what I did in routes.rb:

scope \":lang\" do
  resources :posts
end
         


        

Answer 1

Ryan Bates covered this in todays railscast: http://railscasts.com/episodes/138-i18n-revised

You find the source for url_for here: http://api.rubyonrails.org/classes/ActionDispatch/Routing/UrlFor.html

You will see it merges the given options with url_options, which in turn calls default_url_options.

Add the following as private methods to your application_controller.rb and you should be set.

def locale_from_cookie
  # retrieve the locale
end

def default_url_options(options = {})
  {:lang => locale_from_cookie}
end