How to exclude certain attributes from the search scope?

The search attributes feature allows users to search all attributes. In some cases, you should exclude attributes that make no sense for the search process.

How to add the code?

1. Open the functions.php file in your child theme and add the code at the end
2. Or install the Code Snippets plugin and apply this code as a snippet.

Where can you find the attribute names?

In WooCommerce an attribute is a custom taxonomy. To exclude attributes we use the taxonomy name. WooCommerce adds the prefix “pa_” for each attribute slug to create custom taxonomies. If an attribute has the slug “height”, the taxonomy will be “pa_height”. If you don’t know how to check the taxonomy for an attribute, take a look at the following screen. 

Go to WooCommerce → Attributes → Edit → check the URL

Custom snippet

/**
 * Attributes to exclude
 *
 * @return array
 */
function wcas_get_attributes_to_exclude() {
	return array(
		'pa_calipers', //Replace with yours!!!
		'pa_case-size' //Replace with yours!!!
	);
}

/**
 * Exclude attribute every time when the product is updated
 *
 * @return array
 */
add_filter( 'dgwt/wcas/product/attributes', function ( $attributes ) {

	foreach ( wcas_get_attributes_to_exclude() as $taxonomy ) {
		if ( array_key_exists( $taxonomy, $attributes ) ) {
			unset( $attributes[ $taxonomy ] );
		}
	}

	return $attributes;
} );

/**
 * Exclude attribute every time when the whole index process is running
 *
 * @return array
 */
add_filter( 'dgwt/wcas/attribute_taxonomies', function ( $taxonomies ) {

	foreach ( wcas_get_attributes_to_exclude() as $taxonomy ) {
		if ( ( $key = array_search( $taxonomy, $taxonomies ) ) !== false ) {
			unset( $taxonomies[ $key ] );
		}
	}

	return $taxonomies;
} );

After adding the code, remember to rebuild the search index.

Go to WooCommerce → FiboSearch → Indexer (tab) and rebuild the search index. Wait for this process to finish.