1 files changed, 89 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
new file mode 100644
index 0000000000..7d42f5d931
--- /dev/null
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+require "rails"
+require "action_controller"
+require "action_dispatch/railtie"
+require "abstract_controller/railties/routes_helpers"
+require "action_controller/railties/helpers"
+require "action_view/railtie"
+
+module ActionController
+  class Railtie < Rails::Railtie #:nodoc:
+    config.action_controller = ActiveSupport::OrderedOptions.new
+
+    config.eager_load_namespaces << ActionController
+
+    initializer "action_controller.assets_config", group: :all do |app|
+      app.config.action_controller.assets_dir ||= app.config.paths["public"].first
+    end
+
+    initializer "action_controller.set_helpers_path" do |app|
+      ActionController::Helpers.helpers_path = app.helpers_paths
+    end
+
+    initializer "action_controller.parameters_config" do |app|
+      options = app.config.action_controller
+
+      ActiveSupport.on_load(:action_controller, run_once: true) do
+        ActionController::Parameters.permit_all_parameters = options.delete(:permit_all_parameters) { false }
+        if app.config.action_controller[:always_permitted_parameters]
+          ActionController::Parameters.always_permitted_parameters =
+            app.config.action_controller.delete(:always_permitted_parameters)
+        end
+        ActionController::Parameters.action_on_unpermitted_parameters = options.delete(:action_on_unpermitted_parameters) do
+          (Rails.env.test? || Rails.env.development?) ? :log : false
+        end
+      end
+    end
+
+    initializer "action_controller.set_configs" do |app|
+      paths   = app.config.paths
+      options = app.config.action_controller
+
+      options.logger      ||= Rails.logger
+      options.cache_store ||= Rails.cache
+
+      options.javascripts_dir ||= paths["public/javascripts"].first
+      options.stylesheets_dir ||= paths["public/stylesheets"].first
+
+      # Ensure readers methods get compiled.
+      options.asset_host        ||= app.config.asset_host
+      options.relative_url_root ||= app.config.relative_url_root
+
+      ActiveSupport.on_load(:action_controller) do
+        include app.routes.mounted_helpers
+        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
+        extend ::ActionController::Railties::Helpers
+
+        options.each do |k, v|
+          k = "#{k}="
+          if respond_to?(k)
+            send(k, v)
+          elsif !Base.respond_to?(k)
+            raise "Invalid option key: #{k}"
+          end
+        end
+      end
+    end
+
+    initializer "action_controller.compile_config_methods" do
+      ActiveSupport.on_load(:action_controller) do
+        config.compile_methods! if config.respond_to?(:compile_methods!)
+      end
+    end
+
+    initializer "action_controller.request_forgery_protection" do |app|
+      ActiveSupport.on_load(:action_controller_base) do
+        if app.config.action_controller.default_protect_from_forgery
+          protect_from_forgery with: :exception
+        end
+      end
+    end
+
+    initializer "action_controller.eager_load_actions" do
+      ActiveSupport.on_load(:after_initialize) do
+        ActionController::Metal.descendants.each(&:action_methods) if config.eager_load
+      end
+    end
+  end
+end