locale.rb

The Locale filter extracts segments matching /:locale from the beginning of the recognized path and exposes the page parameter as params[:page]. When a path is generated the filter adds the segments to the path accordingly if the page parameter is passed to the url helper.

  incoming url: /de/products/page/1
  filtered url: /de/products
  params:       params[:locale] = 'de'

You can install the filter like this:

  # in config/routes.rb
  Rails.application.routes.draw do
    filter :locale
  end

To make your named_route helpers or url_for add the pagination segments you can use:

  products_path(:locale => 'de')
  url_for(:products, :locale => 'de'))

Required files