Merge pull request rails#51952 from excid3/app-update-public

Update public directory during app:update command

Author: rafaelfranca

railties/lib/rails/commands/app/update_command.rb

@@ -14,6 +14,7 @@ class UpdateCommand < Base # :nodoc:
         def perform
           configs
           bin
+          public_directory
           active_storage
           display_upgrade_guide_info
         end
@@ -31,6 +32,12 @@ def bin
           app_generator.update_bin_files
         end
 
+        desc "public_directory", "Add or update files in the application public/ directory", hide: true
+        def public_directory
+          require_application!
+          app_generator.create_public_files
+        end
+
         desc "active_storage", "Run the active_storage:update command", hide: true
         def active_storage
           require_application!

railties/test/generators/app_generator_test.rb

@@ -226,6 +226,16 @@ def test_app_update_does_not_remove_rack_cors_if_already_present
     assert_file "config/initializers/cors.rb"
   end
 
+  def test_app_update_generates_public_folders
+    run_generator
+
+    FileUtils.rm_rf("#{destination_root}/public/406-unsupported-browser.html")
+
+    run_app_update
+
+    assert_file "public/406-unsupported-browser.html"
+  end
+
   def test_app_update_does_not_generate_assets_initializer_when_sprockets_and_propshaft_are_not_used
     run_generator [destination_root, "-a", "none"]
     run_app_update