1 files changed, 54 insertions, 0 deletions
diff --git a/actionview/lib/action_view/renderer/abstract_renderer.rb b/actionview/lib/action_view/renderer/abstract_renderer.rb
index ae366ce54a..b397c02cde 100644
--- a/actionview/lib/action_view/renderer/abstract_renderer.rb
+++ b/actionview/lib/action_view/renderer/abstract_renderer.rb
@@ -27,6 +27,52 @@ module ActionView
       raise NotImplementedError
     end
 
+    class RenderedCollection # :nodoc:
+      def self.empty(format)
+        EmptyCollection.new format
+      end
+
+      attr_reader :rendered_templates
+
+      def initialize(rendered_templates, spacer)
+        @rendered_templates = rendered_templates
+        @spacer = spacer
+      end
+
+      def body
+        @rendered_templates.map(&:body).join(@spacer.body).html_safe
+      end
+
+      def format
+        rendered_templates.first.format
+      end
+
+      class EmptyCollection
+        attr_reader :format
+
+        def initialize(format)
+          @format = format
+        end
+
+        def body; nil; end
+      end
+    end
+
+    class RenderedTemplate # :nodoc:
+      attr_reader :body, :template
+
+      def initialize(body, template)
+        @body = body
+        @template = template
+      end
+
+      def format
+        template.format
+      end
+
+      EMPTY_SPACER = Struct.new(:body).new
+    end
+
     private
 
       def extract_details(options) # :doc:
@@ -49,5 +95,13 @@ module ActionView
 
         @lookup_context.formats = formats | @lookup_context.formats
       end
+
+      def build_rendered_template(content, template)
+        RenderedTemplate.new content, template
+      end
+
+      def build_rendered_collection(templates, spacer)
+        RenderedCollection.new templates, spacer
+      end
   end
 end