I want to add a brand and a gtin to my product markup in WooCommerce. At the moment the Yoast SEO plugin already adds a lot of markup. But it only has the option to add the brand with a product attribute. In my case, the brand is based on a custom field. Also, the gtin is in a different field and couldn't be used with Yoast.
I found a code snippet in their docs which allows to add custom data to the markup:
add_filter( 'wpseo_schema_webpage', 'example_change_webpage' );
/**
* Changes @type of Webpage Schema data.
*
* @param array $data Schema.org Webpage data array.
*
* @return array Schema.org Webpage data array.
*/
function example_change_webpage( $data ) {
if ( ! is_page( 'about' ) ) {
return $data;
}
$data['@type'] = 'AboutPage';
return $data;
}
But that's not for products and I couldn't see how I can change that.
I also found an example for the schema piece product:
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Product",
"@id": "https://www.example.com/#/schema/product/abc123",
"name": "Example Product",
"image": {
"@id": "https://www.example.com/#/schema/image/abc123"
}
}
]
}
I could use that in a custom function and add it as javascript in the head. Like this:
add_action( 'wp_head', function() {
if ( is_product() ):
?>
<script type="application/ld+json">{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Product",
"@id": "#product",
"brand": {
"@id": "https://www.example.com/#/schema/organization/abc123"
},
"sku": "abc123",
}
]
}</script>
<?php
endif;
}, 99 );
But now I have two different schema markups for the product.
Isn't there a way to add content to the existing markup from Yoast?
