Add to Cart Ticket Links (WT 1.0.1)

/**
 * This emulates a private method from the WooTickets class, therefore should not be considered
 * future proof.
 *
 * @param $event_id
 * @return array
 */
function get_wootickets_ids( $event_id ) {
    if ( is_object( $event_id ) )
        $event_id = $event_id->ID;

    $query = new WP_Query( array( 'post_type'      => 'product',
        'meta_key'       => '_tribe_wooticket_for_event',
        'meta_value'     => $event_id,
        'meta_compare'   => '=',
        'posts_per_page' => - 1,
        'fields'         => 'ids',
        'post_status'    => 'publish', ) );

    return $query->posts;
}


function add_to_cart_wooticket_btns() {
    $tickets = get_wootickets_ids(get_the_ID());

    foreach ($tickets as $ticket_id)
        echo '<a href="'.do_shortcode('[add_to_cart_url id="'.$ticket_id.'"]').'"> Add to Cart </a>';
}