How to set default variable for url in rails

Question

Ruby on Rails

There is a need to pass the current language to each url. I found the default_url_options method in the docs, but it doesn't work. Rails version 4.1.
Tried like this in the controller:

helper_method :url_for
  def default_url_options
    { locale: "en" }
  end

and so in before_action:

Rails.application.routes.default_url_options[:locale]= 'en'

And even so in the configs:

config.action_controller.default_url_options = {:locale => "en"}

There is only one result - the locale parameter does not appear in the url. What's wrong?

Answer 1

Maybe this will help rusrails.ru/rails-internationalization-i18n-api

Answer 2

Is it registered somewhere in the marches?
Approximately like this

get '/posts(/:locale)'
# или
scope "/:locale" do
...

Answer 3

I actually found the problem myself. The fact is that all my routes were wrapped with a scope of the form:

scope "(:locale)", :defaults => {:locale => "ru"}, :locale => /(ru|en)/ do

In this case, the locale was overwriting the one declared in default_url_options