add conditional redirect

web/config/application.rb

@@ -478,5 +478,10 @@ if defined?(Bundler)
     config.rating_dialog_min_num = 1
 
     config.gcp_stats_host = "https://us-central1-tough-craft-276813.cloudfunctions.net"
+
+    config.root_redirect_on = true
+    config.root_redirect_subdomain = ''
+    config.root_redirect_path = '/'
+
   end
 end

web/config/environments/development.rb

@@ -111,4 +111,5 @@ SampleApp::Application.configure do
 
   config.rating_dialog_min_time = 1
   config.rating_dialog_min_num = 1
+  config.root_redirect_on = false
 end

web/config/routes.rb

@@ -8,7 +8,14 @@ Rails.application.routes.draw do
   resources :users
   resources :sessions, only: [:new, :create, :destroy]
 
-  root to: 'users#home'
+  if Rails.application.config.root_redirect_on
+    root to: redirect(subdomain: Rails.application.config.root_redirect_subdomain, path: Rails.application.config.root_redirect_path) # => foo.example.com/bar
+  else
+    root to: 'users#home'
+  end
+
+
+
 
   # signup, and signup completed, related pages
   get '/signup',  to: 'users#new'