class ActionView::Renderer

def render_partial_to_object(context, options, &block)
  partial = options[:partial]
  if String === partial
    collection = collection_from_options(options)
    if collection
      # Collection + Partial
      renderer = CollectionRenderer.new(@lookup_context, options)
      renderer.render_collection_with_partial(collection, partial, context, block)
    else
      if options.key?(:object)
        # Object + Partial
        renderer = ObjectRenderer.new(@lookup_context, options)
        renderer.render_object_with_partial(options[:object], partial, context, block)
      else
        # Partial
        renderer = PartialRenderer.new(@lookup_context, options)
        renderer.render(partial, context, block)
      end
    end
  else
    collection = collection_from_object(partial) || collection_from_options(options)
    if collection
      # Collection + Derived Partial
      renderer = CollectionRenderer.new(@lookup_context, options)
      renderer.render_collection_derive_partial(collection, context, block)
    else
      # Object + Derived Partial
      renderer = ObjectRenderer.new(@lookup_context, options)
      renderer.render_object_derive_partial(partial, context, block)
    end
  end
end