If you ever did a google search and wondered “how do you put those stars in the search results?” Then you want to know what RDFa is and how it works.

The focus of this post is not to present the RDFa, but its practical use in Magento. In this article we will talk more specifically about the use of RDFa in product evaluation. That will generate an organic search result like this:

Got your attention!?

Quick introduction

I need to explain quickly what we’ll do next, so it does not look like something out of this world.

RDFa is a text markup, just like HTML is. So what we will do is something very simple… just mark the text with the equivalent tags. To learn more about RDFa go to:

https://support.google.com/webmasters/answer/146898?hl=en-EN

It would be very useful if the Magento development team already created this RDF markup natively in the themes, but unfortunately so far this does not exist. So we must take the steps below.

RDFa product evaluation markup

There are several types of RDFa content marking, at this moment we will see how to use RDFa marking to display the evaluation of our products in organic search results.

To begin, let’s edit the summary.phtml file that is located at:

app > design > frontend > base > default > template > review > helper > summary.phtml

Do not change files in base/default, make a copy of this file to default/default or your custom package/theme, and apply changes to the copy.

At the beginning of the file, in class=”ratings” add:

Now just include the information card just below the class=”rating” rating.

escapeHtml($this->getProduct()->getName()) ?>

    
        getRatingSummary() ?>
        100
    

Just save the file and you’re done.

I want to know more

You probably want to know if the code is working, when it will appear in google, how to include other information, etc, etc, etc. So let’s go there:

– How do I know which file should I change in Magento?

I used the Magento debug, as shown in this post: Which file to change?

– How to know which markup tags are available in RDFa?

In support of google webmasters there is a list of them: Rich snippets – Review ratings

– How to test? I want to know if the code I created is correct.

There is a tool in google webmasters where you can enter the URL of your site, or else copy/paste the generated html code to see the result (and possible errors): http://www.google.com/webmasters/tools/richsnippets

– When will this result appear on google?

I do not know, I do not work on google. But probably as soon as your code is indexed and validated by search engines. This can take hours, days, or even weeks.

Success!