Delegate ivars to controller instead of copying

Reduce number of instance variables being copied from controller to
view. Instead, delegate them to controller instance.

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Reduce number of instance variables being copied from controller to view. [Pratik]
+
 * select_datetime and select_time default to Time.zone.now when config.time_zone is set [Geoff Buesing]
 
 * datetime_select defaults to Time.zone.now when config.time_zone is set [Geoff Buesing]

actionpack/lib/action_controller/base.rb

@@ -256,7 +256,8 @@ module ActionController #:nodoc:
     
     # Controller specific instance variables which will not be accessible inside views.
     @@protected_view_variables = %w(@assigns @performed_redirect @performed_render @variables_added @request_origin @url @parent_controller
-                                    @action_name @before_filter_chain_aborted @action_cache_path)
+                                    @action_name @before_filter_chain_aborted @action_cache_path @_session @_cookies @_headers @_params
+                                    @_flash @_response)
     
     # Prepends all the URL-generating helpers from AssetHelper. This makes it possible to easily move javascripts, stylesheets,
     # and images to a dedicated asset server away from the main web server. Example:

actionpack/lib/action_view/base.rb

@@ -156,9 +156,6 @@ module ActionView #:nodoc:
     attr_reader   :finder
     attr_accessor :base_path, :assigns, :template_extension, :first_render
     attr_accessor :controller
-
-    attr_reader :logger, :response, :headers
-    attr_internal :cookies, :flash, :headers, :params, :request, :response, :session
     
     attr_writer :template_format
     attr_accessor :current_render_extension
@@ -185,7 +182,10 @@ module ActionView #:nodoc:
     @@erb_variable = '_erbout'
     cattr_accessor :erb_variable
     
-    delegate :request_forgery_protection_token, :to => :controller
+    attr_internal :request
+
+    delegate :request_forgery_protection_token, :template, :params, :session, :cookies, :response, :headers,
+             :flash, :logger, :to => :controller
  
     module CompiledTemplates #:nodoc:
       # holds compiled template code
@@ -222,7 +222,6 @@ module ActionView #:nodoc:
       @assigns = assigns_for_first_render
       @assigns_added = nil
       @controller = controller
-      @logger = controller && controller.logger
       @finder = TemplateFinder.new(self, view_paths)
     end
 

actionpack/test/controller/new_render_test.rb

@@ -239,6 +239,14 @@ class NewRenderTestController < ActionController::Base
     render :inline =>  "Hello: <%= params[:name] %>"
   end
 
+  def accessing_request_in_template
+    render :inline =>  "Hello: <%= request.host %>"
+  end
+
+  def accessing_logger_in_template
+    render :inline =>  "<%= logger.class %>"
+  end
+
   def accessing_params_in_template_with_layout
     render :layout => nil, :inline =>  "Hello: <%= params[:name] %>"
   end
@@ -529,10 +537,13 @@ class NewRenderTest < Test::Unit::TestCase
   end
 
   def test_access_to_request_in_view
-    get :hello_world
-    assert !assigns.include?('request'), 'request should not be in assigns'
-    assert_kind_of ActionController::AbstractRequest, assigns['_request']
-    assert_kind_of ActionController::AbstractRequest, @response.template.request
+    get :accessing_request_in_template
+    assert_equal "Hello: www.nextangle.com", @response.body
+  end
+
+  def test_access_to_logger_in_view
+    get :accessing_logger_in_template
+    assert_equal "Logger", @response.body
   end
 
   def test_render_xml