Merge commit 'mainstream/master'

2 files changed, 8 insertions, 3 deletions

diff --git a/actionpack/lib/action_controller/base/layout.rb b/actionpack/lib/action_controller/base/layout.rb
index 4fcef6c5d9..1ad5191c73 100644
--- a/actionpack/lib/action_controller/base/layout.rb
+++ b/actionpack/lib/action_controller/base/layout.rb
@@ -182,7 +182,7 @@ module ActionController #:nodoc:
       def memoized_find_layout(layout, formats) #:nodoc:
         return layout if layout.nil? || layout.respond_to?(:render)
         prefix = layout.to_s =~ /layouts\// ? nil : "layouts"
-        view_paths.find_by_parts(layout.to_s, formats, prefix)
+        view_paths.find_by_parts(layout.to_s, {:formats => formats}, prefix)
       end
 
       def find_layout(*args)
diff --git a/actionpack/lib/action_controller/base/render.rb b/actionpack/lib/action_controller/base/render.rb
index 606df58518..33695cd78e 100644
--- a/actionpack/lib/action_controller/base/render.rb
+++ b/actionpack/lib/action_controller/base/render.rb
@@ -254,7 +254,7 @@ module ActionController
         render_for_text(js)
 
       elsif json = options[:json]
-        json = json.to_json unless json.is_a?(String)
+        json = ActiveSupport::JSON.encode(json) unless json.is_a?(String)
         json = "#{options[:callback]}(#{json})" unless options[:callback].blank?
         response.content_type ||= Mime::JSON
         render_for_text(json)
@@ -374,8 +374,13 @@ module ActionController
         render_for_file(name.sub(/^\//, ''), [layout, true], options)
       end
     end
-  
+
+    # ==== Arguments
+    # parts<Array[String, Array[Symbol*], String, Boolean]>::
+    #     Example: ["show", [:html, :xml], "users", false]
     def render_for_parts(parts, layout, options = {})
+      parts[1] = {:formats => parts[1], :locales => [I18n.locale]}
+      
       tmp = view_paths.find_by_parts(*parts)
       
       layout = _pick_layout(*layout) unless tmp.exempt_from_layout?