Make an existing WordPress blog a subdirectory of a Rails App?

2 comments

1. For Rails3.1+ (+Rails4), you should follow these:
   First, Add gem rack-proxy to Gemfile

   gem “rack-proxy”

   Then add file proxy.rb into Rails.root/lib like this:

   require 'rack/proxy'
   class Proxy < Rack::Proxy
     def initialize(app)
       @app = app
     end
     def call(env)
       original_host = env["HTTP_HOST"]
       rewrite_env(env)
       if env["HTTP_HOST"] != original_host
         perform_request(env)
       else
         # just regular
         @app.call(env)
       end
     end
     def rewrite_env(env)
       request = Rack::Request.new(env)
       if request.path =~ /^/blog(/.*)$/
         # enable these code if you set blog as ROOT directory in wordpress folder
         # env['REQUEST_PATH'] = '/'
         # env['ORIGINAL_FULLPATH'] = '/'
         # env['PATH_INFO'] = '/' # set root path request
         env['REQUEST_URI'] = 'http://tinle1201.wordpressdomain.com' # your path
         env["SERVER_PORT"] = 80
         env["HTTP_HOST"] = "tinle1201.wordpressdomain.com" # point to your host
       end
       env
     end
   end*
   

   Register proxy to middleware into config/application.rb:

   require File.expand_path('../boot', __FILE__)
   require 'rails/all'
   # Require the gems listed in Gemfile, including any gems
   # you've limited to :test, :development, or :production.
   Bundler.require(:default, Rails.env)
   module AdultSavings
     class Application < Rails::Application
       config.autoload_paths += %W(#{config.root}/lib)
       config.middleware.use "Proxy"
       # Settings in config/environments/* take precedence over those specified here.
       # Application configuration should go into files in config/initializers
       # -- all .rb files in that directory are automatically loaded.
       # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
       # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
       # config.time_zone = 'Central Time (US & Canada)'
       # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
       # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
       # config.i18n.default_locale = :de
     end
   end*
   

   Add this line into php file wp-config.php:

   define('WP_HOME', 'http://tinle1201.wordpressdomain.com/blog');
   

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2. Rails configuration

   Add to Gemfile:

   gem "rack-reverse-proxy", :require => "rack/reverse_proxy"
   

   Now we want /blog and /blog/ to be directed to the WordPress instance from the Rails app.

   Add this to your config.ru right before you run the app:

   use Rack::ReverseProxy do
     reverse_proxy(/^/blog(/.*)$/,
       'http://CHANGEME.herokuapp.com$1',
       opts = {:preserve_host => true})
   end
   

   In config/routes.rb add a route:

   match "/blog" => redirect("/blog/")
   

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