Avoid Action Cable stubs on --skip-action-cable

Still missing the stuff in app/ – we need to basically switch from a *
match to specifically picking out what we need.

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -57,7 +57,7 @@ def app
       directory 'app'
 
       keep_file  'app/assets/images'
-      keep_file  'app/assets/javascripts/channels'
+      keep_file  'app/assets/javascripts/channels' unless options[:skip_action_cable]
 
       keep_file  'app/mailers'
 
@@ -84,7 +84,7 @@ def config
         directory "environments"
         directory "initializers"
         directory "locales"
-        directory "redis"
+        directory "redis" unless options[:skip_action_cable]
       end
     end
 

railties/lib/rails/generators/rails/app/templates/config.ru → railties/lib/rails/generators/rails/app/templates/config.ru.tt

 # This file is used by Rack-based servers to start the application.
 
 require ::File.expand_path('../config/environment', __FILE__)
-Rails.application.eager_load!
 
+<%- unless options[:skip_action_cable] -%>
+Rails.application.eager_load!
 require 'action_cable/process/logging'
+<%- end -%>
 
 run Rails.application

railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt

@@ -40,8 +40,10 @@ Rails.application.configure do
   # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
 
+  <%- unless options[:skip_action_cable] -%>
   # Action Cable should be mounted in a separate process for most production setups
   # config.action_cable.url = 'wss://example.com/cable'
+  <%- end -%>
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true