How do I use a different template based on an order variable?

In order to use a different template based on an order variable, simply add the following filter to your themes functions.php You can, for example, change the function to use a different template based on the payment method instead.

/**
 * Change template based on WPML order language.
 * Make sure to create custom templates with the correct names or the templates won't be found.
 *
 * @param string $template_name template name.
 * @param string $template_type template type like global or simple.
 * @param int    $order_id WC Order ID.
 *
 * @return string
 */
function change_template_based_on_order_language( $template_name, $template_type, $order_id ) {
    $order_language = get_post_meta( $order_id, 'wpml_language', true );

    if ( false === $order_language ) {
        return $template_name;
    }

    switch ( $order_language ) {
        case 'en':
            $template_name = 'minimal-en';
            break;
        case 'nl':
            $template_name = 'minimal-nl';
            break;
    }

    return $template_name;
}
add_filter( 'wpi_template_name', 'change_template_based_on_order_language', 10, 3 );
	

Please test the functionality on a development environment of your website. If it ceases to work, please revert back to the original state of your website and follow the tutorial again.