Rails:重构HTML生成帮助器方法以使用部分方法-如何在其中使用块? [英] Rails: Refactoring HTML producing helper method to use a partial - how to use blocks there?

问题描述

在我前面的问题之后

After my earlier question Developing helper functions that generate HTML: should I rather use nested content_tag()s or partials? I am convinced now to rewrite some of my more complex HTML generating helper functions to use templates instead of nested content_tag() calls.

所以这是我的原始助手:

So here's my original helper:

def bootstrap_navlist(&block)
  classes = ['nav', 'nav-list']

  content_tag(:ul, class: classes.join(' ')) do
    capture(self, &block)
  end
end

这就是我现在想使用部分内容的方法:

And that's what I came up with using a partial now:

def bootstrap_navlist(&block)
  render partial: 'bootstrap/navlist'
end

# views/bootstrap/_navlist.html.erb
<ul class="<%= ['nav', 'nav-list'].join(' ') %>">
  How do I output the block here??
</ul>

该块看起来像这样，但是它可以是您喜欢的任何HTML:

The block looks something like this, but it can be any HTML you like:

= bootstrap_navlist do |navlist|
  = navlist.item 'Home', '#'
  = navlist.sublist 'Meine Favoriten', '/favorites' do |sublist|

您可能会猜到，我不确定如何在视图中输出块.我是否应该简单地在帮助程序中捕获它并将其作为:local变量传递?还是有更常见的方式?

As you can guess, I'm not sure how to output the block in the view. Should I simply capture it in the helper and pass it as a :local variable? Or is there a more common way?

非常感谢.

推荐答案

在这种情况下，内容标签没有被深深地嵌套，作为助手是合理的.

This is a case where the content tags were not deeply nested an would be reasonable as a helper.

您的帮助者和部分帮助者如下所示:

Your helper, and partial would look like this:

def bootstrap_navlist(&block)
  render template: 'bootstrap/navlist', :locals => { :block => block }
end


<ul class="nav nav-list">
  <%= capture(self, &block) %>
</ul>

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