Merge remote branch 'rails/master' into identity_map

Conflicts:
	activerecord/examples/performance.rb
	activerecord/lib/active_record/association_preload.rb
	activerecord/lib/active_record/associations.rb
	activerecord/lib/active_record/associations/association_proxy.rb
	activerecord/lib/active_record/autosave_association.rb
	activerecord/lib/active_record/base.rb
	activerecord/lib/active_record/nested_attributes.rb
	activerecord/test/cases/relations_test.rb

1 files changed, 12 insertions, 14 deletions

diff --git a/actionpack/lib/action_view/helpers/cache_helper.rb b/actionpack/lib/action_view/helpers/cache_helper.rb
index f544a9d147..385378ea29 100644
--- a/actionpack/lib/action_view/helpers/cache_helper.rb
+++ b/actionpack/lib/action_view/helpers/cache_helper.rb
@@ -2,31 +2,29 @@ module ActionView
   # = Action View Cache Helper
   module Helpers
     module CacheHelper
-      # This helper to exposes a method for caching of view fragments.
-      # See ActionController::Caching::Fragments for usage instructions.
+      # This helper exposes a method for caching fragments of a view 
+      # rather than an entire action or page.  This technique is useful
+      # caching pieces like menus, lists of newstopics, static HTML
+      # fragments, and so on. This method takes a block that contains
+      # the content you wish to cache. 
       #
-      # A method for caching fragments of a view rather than an entire
-      # action or page.  This technique is useful caching pieces like
-      # menus, lists of news topics, static HTML fragments, and so on.
-      # This method takes a block that contains the content you wish
-      # to cache.  See ActionController::Caching::Fragments for more
-      # information.
+      # See ActionController::Caching::Fragments for usage instructions.
       #
       # ==== Examples
-      # If you wanted to cache a navigation menu, you could do the
-      # following.
+      # If you want to cache a navigation menu, you can do following:
       #
       #   <% cache do %>
       #     <%= render :partial => "menu" %>
       #   <% end %>
       #
-      # You can also cache static content...
+      # You can also cache static content:
       #
       #   <% cache do %>
       #      <p>Hello users!  Welcome to our website!</p>
       #   <% end %>
       #
-      # ...and static content mixed with RHTML content.
+      # Static content with embedded ruby content can be cached as 
+      # well:
       #
       #    <% cache do %>
       #      Topics:
@@ -46,8 +44,8 @@ module ActionView
     private
       # TODO: Create an object that has caching read/write on it
       def fragment_for(name = {}, options = nil, &block) #:nodoc:
-        if controller.fragment_exist?(name, options)
-          controller.read_fragment(name, options)
+        if fragment = controller.read_fragment(name, options)
+          fragment
         else
           # VIEW TODO: Make #capture usable outside of ERB
           # This dance is needed because Builder can't use capture