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Shaheer
Shaheer

Reputation: 2147

how to use schema.org metadata on a review for multiple ratings?

I need to markup the review metadata for a product, but the review will have multiple ratings like service, satisfaction, quality, lifetime etc in the original schema.org documentation for review (http://schema.org/Review) there is only property/field: reviewRating using this i can only use it for one field but i need to provide metadata for all the fields, is there a solution for that?

Thanks.

Upvotes: 1

Views: 1823

Answers (1)

ajax
ajax

Reputation: 1906

Actually one property isn't an issue here since it can be used multiple times. There were a lot of discussions around cardinality of schema.org properties. You can dive into details here (issue at open tracker) and here (W3C Wiki page).

I personally follow the rule stated by Guha:

Right now, it is always allowed to have multiple values.

Another part of your question is how to describe different ratings. You can use mechanism of "multiple inheritance" like in "serious" programming language. That is one entity may have several types. In your case one type will be http://schema.org/Rating and another (quality, service, etc) you can get from any external to schema.org vocabulary. E.g., productontology is a good candidate (you can use http://www.productontology.org/id/Quality_philosophy, http://www.productontology.org/id/Customer_service accordingly). With RDFA you can just go with it - language itself provides all the necessary mechanisms to say that. But for microdata (and I bet you're using this one) you need to do "dirty hack" and use additionalType property.

So simple example of what you need is smth like this:

  <div itemscope itemtype="http://schema.org/Review">
    <span itemprop="name">Not a happy camper</span> -
    by <span itemprop="author">Ellie</span>,
    <meta itemprop="datePublished" content="2011-04-01">April 1, 2011
    <div itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating">
      <meta itemprop="additionalType" content="http://www.productontology.org/id/Quality_philosophy">
      <meta itemprop="worstRating" content = "1">
      <span itemprop="ratingValue">1</span>/
      <span itemprop="bestRating">5</span>stars
    </div>
        <div itemprop="reviewRating" itemscope itemtype="http://schema.org/Rating">
      <meta itemprop="additionalType" content="http://www.productontology.org/id/Customer_service">
      <meta itemprop="worstRating" content = "1">
      <span itemprop="ratingValue">5</span>/
      <span itemprop="bestRating">5</span>stars
    </div>
    <span itemprop="description">The lamp burned out and now I have to replace
    it. </span>
  </div>

And Google validator sees all the data.

Upvotes: 2

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