Do not generate unused components contents in `app:update` task

Currently, `app:update` generates all contents regardless of the
component using in application.

For example, even if not using Action Cable, `app:update` will generate
a contents related to Action Cable. This is a little inconvenient.
This PR checks the existence of the component and does not generate
unnecessary contents.
Can not check all options in this way. However, it will be able to
prevent the generation of unnecessary files.

1 files changed, 5 insertions, 22 deletions

diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake
index f7e8f4f340..6c6e86d78d 100644
--- a/railties/lib/rails/tasks/framework.rake
+++ b/railties/lib/rails/tasks/framework.rake
@@ -36,38 +36,21 @@ namespace :app do
   end
 
   namespace :update do
-    class RailsUpdate
-      def self.invoke_from_app_generator(method)
-        app_generator.send(method)
-      end
-
-      def self.app_generator
-        @app_generator ||= begin
-          require_relative "../generators"
-          require_relative "../generators/rails/app/app_generator"
-          gen = Rails::Generators::AppGenerator.new ["rails"],
-                                                    { api: !!Rails.application.config.api_only, update: true },
-                                                    destination_root: Rails.root
-          File.exist?(Rails.root.join("config", "application.rb")) ?
-            gen.send(:app_const) : gen.send(:valid_const?)
-          gen
-        end
-      end
-    end
+    require_relative "../app_updater"
 
     # desc "Update config/boot.rb from your current rails install"
     task :configs do
-      RailsUpdate.invoke_from_app_generator :create_boot_file
-      RailsUpdate.invoke_from_app_generator :update_config_files
+      Rails::AppUpdater.invoke_from_app_generator :create_boot_file
+      Rails::AppUpdater.invoke_from_app_generator :update_config_files
     end
 
     # desc "Adds new executables to the application bin/ directory"
     task :bin do
-      RailsUpdate.invoke_from_app_generator :update_bin_files
+      Rails::AppUpdater.invoke_from_app_generator :update_bin_files
     end
 
     task :upgrade_guide_info do
-      RailsUpdate.invoke_from_app_generator :display_upgrade_guide_info
+      Rails::AppUpdater.invoke_from_app_generator :display_upgrade_guide_info
     end
   end
 end