render

# File actionview/lib/action_view/renderer/partial_renderer.rb, line 292
    def render(context, options, block)
      setup(context, options, block)
      identifier = (@template = find_partial) ? @template.identifier : @path

      @lookup_context.rendered_format ||= begin
        if @template && @template.formats.present?
          @template.formats.first
        else
          formats.first
        end
      end

      if @collection
        instrument(:collection, :identifier => identifier || "collection", :count => @collection.size) do
          render_collection
        end
      else
        instrument(:partial, :identifier => identifier) do
          render_partial
        end
      end
    end