Make the Related Products Query more precise

Hello, Digital-Boutique,

Unfortunately, this feature is not available in our XStore theme and it would require too many customization code to archive.

We highly encourage you to share your suggestion on our Taskboard at https://www.8theme.com/taskboard/. If your idea garners sufficient support from other customers, our development team will carefully evaluate the possibility of including it in a future update.

Should you have any further questions or require assistance, please do not hesitate to contact us.

Best Regards,
8Theme’s Team

Hello @Digital-Boutique,

You may use the following snippet as a starting point to include in your child theme’s functions.php file:

add_filter( 'woocommerce_related_products_args', function( $args ) {
    global $product;

    if ( ! $product || ! is_a( $product, 'WC_Product' ) ) {
        return $args;
    }

    $product_id = $product->get_id();

    $brand_terms = wp_get_post_terms(
        $product_id,
        'brand',
        array( 'fields' => 'ids' )
    );

    $cat_terms = wp_get_post_terms(
        $product_id,
        'product_cat',
        array( 'fields' => 'ids' )
    );

    if ( empty( $brand_terms ) && empty( $cat_terms ) ) {
        return $args;
    }

    $tax_query = array(
        'relation' => 'AND',
    );

    if ( ! empty( $brand_terms ) ) {
        $tax_query[] = array(
            'taxonomy' => 'brand',
            'field'    => 'term_id',
            'terms'    => $brand_terms,
            'operator' => 'IN',
        );
    }

    if ( ! empty( $cat_terms ) ) {
        foreach ( $cat_terms as $cat_id ) {
            $tax_query[] = array(
                'taxonomy' => 'product_cat',
                'field'    => 'term_id',
                'terms'    => array( $cat_id ),
                'operator' => 'IN',
            );
        }
    }

    $args['tax_query'] = $tax_query;
    $args['post__not_in'] = array( $product_id );

    if ( isset( $args['post__in'] ) && ! empty( $args['post__in'] ) ) {
        $args['post__in'] = $args['post__in'];
    }

    return $args;
}, 10 );

Please note that after reviewing your request, we have confirmed that it requires custom development, which is outside the scope of Envato’s standard support policy. Therefore, we are unable to provide a complete ready-made solution, but we can offer some guidance.

If you would like to have this customization completed efficiently and on time, we recommend submitting your request to our trusted partner, WP Kraken.

You will receive:
– A prompt quote and timeline
– A turnkey implementation by a vetted team
– A warranty for the delivered work

We are confident that this solution will be helpful and hope you will find it beneficial.

Kind regards,
Jack Richardson
8Theme Team