render_partial

# File actionpack/lib/action_view/renderer/partial_renderer.rb, line 254
    def render_partial
      locals, view, block = @locals, @view, @block
      object, as = @object, @variable

      if !block && (layout = @options[:layout])
        layout = find_template(layout)
      end

      object ||= locals[as]
      locals[as] = object

      content = @template.render(view, locals) do |*name|
        view._layout_for(*name, &block)
      end

      content = layout.render(view, locals){ content } if layout
      content
    end