Term to Term connections?

Hi Matt,

You can create a relationship between terms easy with this code

add_action( 'mb_relationships_init', function () {
    MB_Relationships_API::register( [
        'id'   => 'term_to_term',
        'from' => [
            'object_type' => 'term',
            'taxonomy'    => 'category',
        ],
        'to'   => [
            'object_type' => 'term',
            'taxonomy'    => 'product_cat',
        ],
    ] );
} );

an example between the category of post and product category of Product (WooCommerce). Then this code will show the terms which are related

$args = array(
    'taxonomy' => 'product_cat',
    'relationship' => [
        'id'   => 'term_to_term',
        'from' => get_queried_object_id(), // You can pass object ID or full object
    ],
);
$terms = get_terms( $args );

foreach ( $terms as $term ) {
    echo $term->name . '<br>';
}

To manipulate with the terms, please follow this documentation.