Bugfixes and Rails Edge

Update to Rails 2.3.1.
  (Actually, not quite. Doesn't look like 2.3.1 will be released
   today, but I REALLY want to push these bugfixes out.)
Removed bundled Rack (Rails 2.3.1 comes bundled with Rack 1.0).
Add
     config.action_view.cache_template_loading = true
  to production environment.
Fix FastCGI bug (http://rubyforge.org/tracker/index.php?func=detail&aid=24191&group_id=186&atid=783).
Fix WikiWords bug (http://rubyforge.org/pipermail/instiki-users/2009-February/001181.html).

vendor/rails/actionpack/lib/action_controller/dispatcher.rb

@@ -5,15 +5,14 @@ module ActionController
     class << self
       def define_dispatcher_callbacks(cache_classes)
         unless cache_classes
-          # Development mode callbacks
-          before_dispatch :reload_application
-          after_dispatch :cleanup_application
+          unless self.middleware.include?(Reloader)
+            self.middleware.insert_after(Failsafe, Reloader)
+          end
 
           ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false
         end
 
         if defined?(ActiveRecord)
-          after_dispatch :checkin_connections
           to_prepare(:activerecord_instantiate_observers) { ActiveRecord::Base.instantiate_observers }
         end
 
@@ -42,6 +41,30 @@ module ActionController
         callback = ActiveSupport::Callbacks::Callback.new(:prepare_dispatch, block, :identifier => identifier)
         @prepare_dispatch_callbacks.replace_or_append!(callback)
       end
+
+      def run_prepare_callbacks
+        if defined?(Rails) && Rails.logger
+          logger = Rails.logger
+        else
+          logger = Logger.new($stderr)
+        end
+
+        new(logger).send :run_callbacks, :prepare_dispatch
+      end
+
+      def reload_application
+        # Run prepare callbacks before every request in development mode
+        run_prepare_callbacks
+
+        Routing::Routes.reload
+      end
+
+      def cleanup_application
+        # Cleanup the application before processing the current request.
+        ActiveRecord::Base.reset_subclasses if defined?(ActiveRecord)
+        ActiveSupport::Dependencies.clear
+        ActiveRecord::Base.clear_reloadable_connections! if defined?(ActiveRecord)
+      end
     end
 
     cattr_accessor :middleware
@@ -88,29 +111,8 @@ module ActionController
       dispatch
     end
 
-    def reload_application
-      # Run prepare callbacks before every request in development mode
-      run_callbacks :prepare_dispatch
-
-      Routing::Routes.reload
-    end
-
-    # Cleanup the application by clearing out loaded classes so they can
-    # be reloaded on the next request without restarting the server.
-    def cleanup_application
-      ActiveRecord::Base.reset_subclasses if defined?(ActiveRecord)
-      ActiveSupport::Dependencies.clear
-      ActiveRecord::Base.clear_reloadable_connections! if defined?(ActiveRecord)
-    end
-
     def flush_logger
       Base.logger.flush
     end
-
-    def checkin_connections
-      # Don't return connection (and peform implicit rollback) if this request is a part of integration test
-      return if @env.key?("rack.test")
-      ActiveRecord::Base.clear_active_connections!
-    end
   end
 end