Clean up the config object in ActionPack. Create config_accessor whic…

…h just delegates to the config object, reducing the number of deprecations and add specific tests.

actionpack/lib/abstract_controller.rb

@@ -12,7 +12,6 @@
 module AbstractController
   extend ActiveSupport::Autoload
 
-  autoload :Assigns
   autoload :Base
   autoload :Callbacks
   autoload :Collector

actionpack/lib/abstract_controller/base.rb

@@ -1,4 +1,4 @@
-require 'active_support/ordered_options'
+require 'active_support/configurable'
 
 module AbstractController
   class Error < StandardError; end
@@ -8,6 +8,8 @@ class Base
     attr_internal :response_body
     attr_internal :action_name
 
+    include ActiveSupport::Configurable
+
     class << self
       attr_reader :abstract
       alias_method :abstract?, :abstract
@@ -29,14 +31,6 @@ def descendants
         @descendants ||= []
       end
 
-      def config
-        @config ||= ActiveSupport::InheritableOptions.new(superclass < Base ? superclass.config : {})
-      end
-
-      def configure
-        yield config
-      end
-
       # A list of all internal methods for a controller. This finds the first
       # abstract superclass of a controller, and gets a list of all public
       # instance methods on that abstract class. Public instance methods of
@@ -99,10 +93,6 @@ def controller_path
 
     abstract!
 
-    def config
-      @config ||= ActiveSupport::InheritableOptions.new(self.class.config)
-    end
-
     # Calls the action going through the entire action dispatch stack.
     #
     # The actual method that is called is determined by calling
@@ -133,6 +123,7 @@ def action_methods
     end
 
     private
+
       # Returns true if the name can be considered an action. This can
       # be overridden in subclasses to modify the semantics of what
       # can be considered an action.

actionpack/lib/abstract_controller/helpers.rb

@@ -8,7 +8,6 @@ module Helpers
 
     included do
       class_attribute :_helpers
-      delegate :_helpers, :to => :'self.class'
       self._helpers = Module.new
     end
 

actionpack/lib/abstract_controller/logger.rb

@@ -6,7 +6,7 @@ module Logger
     extend ActiveSupport::Concern
 
     included do
-      cattr_accessor :logger
+      config_accessor :logger
       extend ActiveSupport::Benchmarkable
     end
   end

actionpack/lib/action_controller/base.rb

@@ -65,8 +65,11 @@ def self.subclasses
       @subclasses ||= []
     end
 
+    # TODO Move this to the appropriate module
+    config_accessor :assets_dir, :asset_path, :javascripts_dir, :stylesheets_dir
+
     ActiveSupport.run_load_hooks(:action_controller, self)
   end
 end
 
-require "action_controller/deprecated/base"
+require "action_controller/deprecated/base"

actionpack/lib/action_controller/caching.rb

@@ -63,12 +63,10 @@ def cache_configured?
     included do
       extend ConfigMethods
 
-      delegate :perform_caching, :perform_caching=, :to => :config
-      singleton_class.delegate :perform_caching, :perform_caching=, :to => :config
-      self.perform_caching = true
+      config_accessor :perform_caching
+      self.perform_caching = true if perform_caching.nil?
     end
 
-
     def caching_allowed?
       request.get? && response.status == 200
     end

actionpack/lib/action_controller/caching/pages.rb

@@ -44,17 +44,17 @@ module Pages
         # For Rails, this directory has already been set to Rails.public_path (which is usually set to <tt>Rails.root + "/public"</tt>). Changing
         # this setting can be useful to avoid naming conflicts with files in <tt>public/</tt>, but doing so will likely require configuring your
         # web server to look in the new location for cached files.
-        singleton_class.delegate :page_cache_directory, :page_cache_directory=, :to => :config
-        self.page_cache_directory = ''
+        config_accessor :page_cache_directory
+        self.page_cache_directory ||= ''
 
         ##
         # :singleton-method:
         # Most Rails requests do not have an extension, such as <tt>/weblog/new</tt>. In these cases, the page caching mechanism will add one in
         # order to make it easy for the cached files to be picked up properly by the web server. By default, this cache extension is <tt>.html</tt>.
         # If you want something else, like <tt>.php</tt> or <tt>.shtml</tt>, just set Base.page_cache_extension. In cases where a request already has an
         # extension, such as <tt>.xml</tt> or <tt>.rss</tt>, page caching will not add an extension. This allows it to work well with RESTful apps.
-        singleton_class.delegate :page_cache_extension, :page_cache_extension=, :to => :config
-        self.page_cache_extension = '.html'
+        config_accessor :page_cache_extension
+        self.page_cache_extension ||= '.html'
       end
 
       module ClassMethods

actionpack/lib/action_controller/deprecated/base.rb

@@ -1,33 +1,16 @@
 module ActionController
   class Base
-    class << self
-      def deprecated_config_accessor(option, message = nil)
-        deprecated_config_reader(option, message)
-        deprecated_config_writer(option, message)
+    # Deprecated methods. Wrap them in a module so they can be overwritten by plugins
+    # (like the verify method.)
+    module DeprecatedBehavior #:nodoc:
+      def relative_url_root
+        ActiveSupport::Deprecation.warn "ActionController::Base.relative_url_root is ineffective. " <<
+          "Please stop using it.", caller
       end
 
-      def deprecated_config_reader(option, message = nil)
-        message ||= "Reading #{option} directly from ActionController::Base is deprecated. " \
-                    "Please read it from config.#{option}"
-
-        self.class_eval <<-RUBY, __FILE__, __LINE__ + 1
-          def #{option}
-            ActiveSupport::Deprecation.warn #{message.inspect}, caller
-            config.#{option}
-          end
-        RUBY
-      end
-
-      def deprecated_config_writer(option, message = nil)
-        message ||= "Setting #{option} directly on ActionController::Base is deprecated. " \
-                    "Please set it on config.action_controller.#{option}"
-
-        self.class_eval <<-RUBY, __FILE__, __LINE__ + 1
-          def #{option}=(val)
-            ActiveSupport::Deprecation.warn #{message.inspect}, caller
-            config.#{option} = val
-          end
-        RUBY
+      def relative_url_root=
+        ActiveSupport::Deprecation.warn "ActionController::Base.relative_url_root= is ineffective. " <<
+          "Please stop using it.", caller
       end
 
       def consider_all_requests_local
@@ -125,9 +108,7 @@ def use_accept_header
       def use_accept_header=(val)
         use_accept_header
       end
-    end
 
-    module DeprecatedBehavior
       # This method has been moved to ActionDispatch::Request.filter_parameters
       def filter_parameter_logging(*args, &block)
         ActiveSupport::Deprecation.warn("Setting filter_parameter_logging in ActionController is deprecated and has no longer effect, please set 'config.filter_parameters' in config/application.rb instead", caller)
@@ -146,17 +127,6 @@ def verify(*args)
 
     extend DeprecatedBehavior
 
-    deprecated_config_writer :session_options
-    deprecated_config_writer :session_store
-
-    deprecated_config_accessor :assets_dir
-    deprecated_config_accessor :asset_path
-    deprecated_config_accessor :helpers_path
-    deprecated_config_accessor :javascripts_dir
-    deprecated_config_accessor :page_cache_directory
-    deprecated_config_accessor :relative_url_root, "relative_url_root is ineffective. Please stop using it"
-    deprecated_config_accessor :stylesheets_dir
-
     delegate :consider_all_requests_local, :consider_all_requests_local=,
              :allow_concurrency, :allow_concurrency=, :to => :"self.class"
   end

actionpack/lib/action_controller/metal/compatibility.rb

@@ -21,8 +21,8 @@ class << self
         delegate :default_charset=, :to => "ActionDispatch::Response"
       end
 
-      # cattr_reader :protected_instance_variables
-      cattr_accessor :protected_instance_variables
+      # TODO: Update protected instance variables list
+      config_accessor :protected_instance_variables
       self.protected_instance_variables = %w(@assigns @performed_redirect @performed_render
                                              @variables_added @request_origin @url
                                              @parent_controller @action_name

actionpack/lib/action_controller/metal/helpers.rb

@@ -52,8 +52,8 @@ module Helpers
     include AbstractController::Helpers
 
     included do
-      class_attribute :helpers_path
-      self.helpers_path = []
+      config_accessor :helpers_path
+      self.helpers_path ||= []
     end
 
     module ClassMethods