discite/config/routes.rb

Discite::Application.routes.draw do
  scope '/:locale' do
    resources :courses
    match '/courses/:id/run' => 'courses#run', via: [:get], as: 'course_start'
    devise_for :users, controllers: { registrations: 'registrations' }
  end

  match '/:locale' => 'home#index', via: [:get]
  root to: 'home#index'
end