"/ admin" disappears from the URL after loading the view (Rails)

Question

After entering the administrator mode, it /admindisappears from the URL.

This happens for all routes nested inside namespace :admin do.

Example:

• Visit http://localhost:3000/admin/universitiesdownload view.
• But then the URL in this view changes to http://localhost:3000/universities.
• Updating the page without adding it manually /adminresults in "No route matches."

Server Logs:

Started GET "/admin/universities"
Processing by Admin::UniversitiesController#index as HTML
Rendered admin/universities/index.html.haml within layouts/admin
Rendering admin/universities/index.html.haml within layouts/admin

Route:

namespace :admin do
    ...
    get '/universities', to: 'universities#index', as: :university_index
    ...
end

rake routes:

admin_university_index GET   /admin/universities(.:format)    admin/universities#index

Controller:

class Admin::UniversitiesController < Admin::BaseController

  def index
    @universities = University.all
  end
end

I have inherited the application and it’s hard for me to understand why this is happening. Has anyone else had experience with this before?

UPDATE

Could this be caused by turbopumps?

UPDATE

By request by adding admin/base_controller

# /app/controllers/admin/base_controller.rb
class Admin::BaseController < ApplicationController

  before_action :admin_only
  layout "admin"

  private

    def admin_only
      unless current_user && current_user.role == 'admin'
        redirect_to login_url, :notice => "Unauthorized"
      end
    end

end

Answer 1

, , Turbolinks. , , dev- Turbolinks. , , - Turbolinks.

, Javascript, , javascript , , .

Turbolinks: https://github.com/turbolinks/turbolinks

Answer 2

Singular Resources, , :

get '/universities', to: 'universities#index', as: :university_index

/universities.

. /admin/universities you should look to change your routes.rb` :

namespace :admin do
  resources :universities, only: [:index] # Creates index only route
end