如何在传递块时呈现非局部布局?

如果传递要渲染的块,则将其渲染为部分块,如下面的代码片段所示:

if block_given?
      _render_partial(options.merge(:partial => options[:layout]), &block)

Rails 3中的完整呈现方法当前如下所示:

def render(options = {}, locals = {}, &block)
  case options
  when Hash
    if block_given?
      _render_partial(options.merge(:partial => options[:layout]), &block)
    elsif options.key?(:partial)
      _render_partial(options)
    else
      template = _determine_template(options)
      lookup_context.freeze_formats(template.formats, true)
      _render_template(template, options[:layout], options)
    end
  when :update
    update_page(&block)
  else
    _render_partial(:partial => options, :locals => locals)
  end
end