Rails 4 subdomains does not work on production

Question

I've created an Rails 4 application with 3 sub-domains.

Development domains:

• mydomain.dev
• api.mydomain.dev
• account.mydomain.dev

Production domains (Ngnix with Passenger):

• app.mydomain.com (www.mydomain.com and mydomain.com show other page, not the application)
• api.mydomain.com
• account.mydomain.com

My config/routes.rb looks like that:

Rails.application.routes.draw do
    namespace :api, constraints: { subdomain: 'api' }, path: '/', defaults: { format: :json } do
        namespace :v1 do
            resources :clients, only: [:create, :show]
        end
    end

    namespace :account, constraints: { subdomain: 'account' }, path: '/' do
        get '/:locale' => 'welcome#index', locale: /en|pt/
        root 'welcome#index'

        scope "(:locale)", locale: /en|pt/ do
            get :sign_in, to: 'sessions#new'
            post :sign_in, to: 'sessions#create'
        end
    end

    get '/:locale' => 'welcome#index', locale: /en|pt/
    root 'welcome#index'

    scope "(:locale)", locale: /en|pt/ do
        resource :session, only: [:new, :create, :destroy]
        get :login, to: 'sessions#new', as: :login
    end
end

My ngnix virtual host file:

server {
    listen 80;
    listen [::]:80;

    # SSL configuration
    #
    listen 443 ssl;
    listen [::]:443 ssl;

    server_name mydomain.com api.mydomain.com account.mydomain.com;

    passenger_enabled on;
    passenger_ruby /home/username/.rvm/gems/ruby-2.2.2@myapp/wrappers/ruby;

    root /var/sites/mydomain.com/current/public;

    ssl on;
    ssl_certificate /etc/nginx/ssl/mydomain.com/server.crt;
    ssl_certificate_key /etc/nginx/ssl/mydomain.com/server.key;
}

The problem, is that on my dev machine (localhost) or development environment its works very well, as I want. But on production I got the error: "The page you were looking for doesn't exist.", with this log info:

Visiting: https://account.mydomain.com/en/sign_in

I, [2015-07-29T11:31:07.197635 #25813] INFO -- : Started GET "/en/sign_in" for 0.0.0.0 at 2015-07-29 11:31:07 +0100 F, [2015-07-29T11:31:07.206758 #25813] FATAL -- : ActionController::RoutingError (No route matches [GET] "/en/sign_in"): actionpack (4.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:21:in call'
newrelic_rpm (3.12.1.298) lib/new_relic/agent/instrumentation/middleware_tracing.rb:67:incall' actionpack (4.2.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in call'
newrelic_rpm (3.12.1.298) lib/new_relic/agent/instrumentation/middleware_tracing.rb:67:incall' railties (4.2.3) lib/rails/rack/logger.rb:38:in call_app' railties (4.2.3) lib/rails/rack/logger.rb:20:inblock in call'

in other works, account.mydomain.com and api.mydomain.com still acting as my main domain "mydomain.com" (as the same domain).

UPDATE:

I add this code on my page:

<%= request.domain.inspect %><br>
<%= request.subdomain.inspect %>

Visiting: http://api.mydomain.co.ao As Result I got:

As Domain: "co.ao"

As Subdomain: "api.mydomain"

But my subdomain here is only: api

What is wrong?

Answer 1

Default

tld_length = 1

You need to update tld_length to 2 for domain like: co.in, co.au

Try:

config.action_dispatch.tld_length = 2

in config/enviroments/production.rb

Reference