如何使用 Microdata 的“itemref"来引用产品范围之外列出的类似产品? [英] How to use Microdata's 'itemref' to reference similar products that are listed outside of the Product scope?
问题描述
我正在尝试使用 Microdata 使用 Schema.org 定义来定义我的网站.在 ItemPage 上，我正在显示有关产品的信息.此外，我想将类似产品链接到当前产品，而相关产品正在当前产品的范围之外展示.
我尝试使用 itemref 来实现这一点 属性.但是，当我查看 结构化数据测试工具 它不显示相关产品是 ItemPage 节点的一部分.
<header itemprop="hasPart" itemscope itemtype="http://schema.org/WPHeader"></标题><article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" id="details_10"><h2 itemprop="name">产品 10</h2></文章><旁边><article itemref="details_10" itemscope itemtype="http://schema.org/Product"><h3 itemprop="name">产品 20</h3></文章><article itemref="details_10" itemscope itemtype="http://schema.org/Product"><h3 itemprop="name">产品 30</h3></文章></一边><footer itemprop="hasPart" itemscope itemtype="http://schema.org/WPFooter"></页脚>必须反过来使用:
itemref属性需要位于表示要向其添加属性的项目的元素上.这将是您的主要产品.您要添加的元素需要
itemprop属性(您缺少该属性以及isSimilarTo属性)和id被itemref属性引用.这些将是您案例中的类似产品.
所以，这将给出:
<article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" itemref="details_20 details_30"></article><旁边><article id="details_20" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article><article id="details_30" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article></一边>这个标记的问题是两个 isSimilarTo 属性也被添加到 ItemPage 中(因为它们嵌套在它下面)，这是不正确的.为避免这种情况，最好的解决方案不是在 body 元素上指定 ItemPage，而是在 div 或类似元素上指定.
<div itemscope itemtype="http://schema.org/ItemPage"><article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" itemref="details_20 details_30"></article><旁边><article id="details_20" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article><article id="details_30" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article></一边>
(您也可以使用 itemref 来避免将主要 Product 嵌套在 ItemPage 下.这也允许指定 <例如，head 元素上的 code>ItemPage.)
I am trying to use Microdata to define my website using the Schema.org definitions. On an ItemPage I am displaying the information about a product. Additionally, I want to link similar products to the current product while the related product is being displayed outside of the current product's scope.
I tried to achieve this using the itemref attribute. However, when I review the page on Structured Data Testing Tool it does not show the related products are part of the ItemPage node.
<body itemscope itemtype="http://schema.org/ItemPage">
<header itemprop="hasPart" itemscope itemtype="http://schema.org/WPHeader">
</header>
<article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" id="details_10">
<h2 itemprop="name">Product 10</h2>
</article>
<aside>
<article itemref="details_10" itemscope itemtype="http://schema.org/Product">
<h3 itemprop="name">Product 20</h3>
</article>
<article itemref="details_10" itemscope itemtype="http://schema.org/Product">
<h3 itemprop="name">Product 30</h3>
</article>
</aside>
<footer itemprop="hasPart" itemscope itemtype="http://schema.org/WPFooter">
</footer>
</body>
It has to be used the other way around:
The
itemrefattribute needs to be on the element that represents the item you want to add properties to. This would be the primary product in your case.The elements you want to add need the
itempropattribute (which you are missing, along with theisSimilarToproperty), and anidthat gets referenced by theitemrefattribute. These would be the similar products in your case.
So, this would give:
<body itemscope itemtype="http://schema.org/ItemPage">
<article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" itemref="details_20 details_30"></article>
<aside>
<article id="details_20" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article>
<article id="details_30" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article>
</aside>
</body>
The problem with this markup is that the two isSimilarTo properties get added to the ItemPage, too (because they are nested under it), which would be incorrect. To avoid this, the best solution would be not to specify the ItemPage on the body element, but on a div or similar.
<body>
<div itemscope itemtype="http://schema.org/ItemPage">
<article itemprop="mainEntity" itemscope itemtype="http://schema.org/Product" itemref="details_20 details_30"></article>
</div>
<aside>
<article id="details_20" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article>
<article id="details_30" itemprop="isSimilarTo" itemscope itemtype="http://schema.org/Product"></article>
</aside>
</body>
(You could also use itemref to avoid having to nest the primary Product under the ItemPage. This would also allow to specify the ItemPage on the head element, for example.)
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