The Road goes ever on and on

Follow my previous post, this article will try to figure out how to organize Rails app and Wordpress with different subdirectory under the same domain.

For Wordpress, what we need is put it under the root directory of Apache, then we can directly visit it at example.com/blog.

For Rails app, we use Unicorn as app server, Nginx as web server. When we deploy it with subdirectory, we need to care about two things.

Make Rails routes work with subdirectory

• configure root directory in config/application.rb

  config.root_directory = '/app'
  

• configure Rails Routes under app scope in config/routes.rb

  require "rails/application"
  
  module RouteScope
    def self.root
      Rails.application.config.root_directory
    rescue NameError
      '/'
    end
  end
    
  RailsApp::Application.routes.draw do
    scope RouteScope.root do 
      root to: 'home#index'
      # other routes here ...
    end
  end
  

• configure Rails app with Nginx in app subdirectory

  upstream rails_app_server {
    server unix:/path/to/railsapp/tmp/sockets/unicorn.sock fail_timeout=0;
  }
  
  server {
    listen 80;
    server_name example.com;
  
    location /app {
      proxy_pass  http://rails_app_server;
      proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
      proxy_redirect off;
      proxy_buffering off;
      proxy_set_header        Host            $host;
      proxy_set_header        X-Real-IP       $remote_addr;
      proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
      error_log /path/to/railsapp/log/nginx/error.log;
      access_log /path/to/railsapp/log/nginx/access.log;
      break;
    }
  }
  

Make Assets work with subdirectory

• configure prefix for assets in config/application.rb

  config.assets.prefix  = '/app/assets/'
  

• make assets prefix work on Nginx

  location ~ ^/app/assets/  {
    root /path/to/railsapp/public;
    gzip_static on;
    expires max;
    add_header Cache-Control public;
    # access_log /dev/null;
  }