Merge branch 'master' of git://github.com/rails/rails

1 files changed, 49 insertions, 0 deletions

diff --git a/actionpack/lib/abstract_controller/localized_cache.rb b/actionpack/lib/abstract_controller/localized_cache.rb
new file mode 100644
index 0000000000..ee7b43cb9f
--- /dev/null
+++ b/actionpack/lib/abstract_controller/localized_cache.rb
@@ -0,0 +1,49 @@
+module AbstractController
+  class HashKey
+    @hash_keys = Hash.new {|h,k| h[k] = Hash.new {|h,k| h[k] = {} } }
+
+    def self.get(klass, formats, locale)
+      @hash_keys[klass][formats][locale] ||= new(klass, formats, locale)
+    end
+
+    attr_accessor :hash
+    def initialize(klass, formats, locale)
+      @formats, @locale = formats, locale
+      @hash = [formats, locale].hash
+    end
+
+    alias_method :eql?, :equal?
+
+    def inspect
+      "#<HashKey -- formats: #{@formats.inspect} locale: #{@locale.inspect}>"
+    end
+  end
+
+  module LocalizedCache
+    extend ActiveSupport::Concern
+
+    module ClassMethods
+      def clear_template_caches!
+        ActionView::Partials::PartialRenderer::TEMPLATES.clear
+        template_cache.clear
+        super
+      end
+
+      def template_cache
+        @template_cache ||= Hash.new {|h,k| h[k] = {} }
+      end
+    end
+
+    def render(options)
+      Thread.current[:format_locale_key] = HashKey.get(self.class, formats, I18n.locale)
+      super
+    end
+
+    private
+
+      def with_template_cache(name)
+        self.class.template_cache[Thread.current[:format_locale_key]][name] ||= super
+      end
+
+  end
+end