change product description schema

Hello,

Thank you for contacting Rank Math today.

Yes this is possible but you would need to write some custom code to get the value of the long description and pass it to the description attribute of the product schema.
You can hook into the following filter to achieve this:

/**
 * Filter to modify Products schema
 *
 * @param array $entity Snippet Data
 * @return array
 */
add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
   ;
    return $entity;
});

Looking forward to helping you. Thank you.

​​​​​​

Hello,

Thank you for contacting Rank Math today.

The code would need to go to your theme’s functions.php or a child theme’s functions.php file if this is active. The code also needs to be adopted to your use case as shown below:

/**
 * Filter to modify Products schema
 *
 * @param array $entity Snippet Data
 * @return array
 */
add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
    global $product;
    $product_full_description = $product->get_description();
    if($product_full_description){
       $entity['description'] = $product_full_description;
    }
    return $entity;
});

Looking forward to helping you. Thank you.

​​​​​​

Hello,

Thank you for contacting Rank Math today.

I am afraid that the schema does not allow addition of other fields but you can disable the Rank Math schema on the page and then generate your own custom schema with these attributes and then add it to the page by using the following Rank Math filter:

/**
 * Collect data to output in JSON-LD.
 *
 * @param array  $unsigned An array of data to output in json-ld.
 * @param JsonLD $unsigned JsonLD instance.
 */
add_filter( 'rank_math/json_ld', function( $data, $jsonld ) {
	return [];
}, 10, 2);

Looking forward to helping you. Thank you.

​​​​​​