German Market - Filter - USTID Pflichtfeld

gistfile1.txt

// Vat Number field is required in checkout
add_filter( 'woocommerce_billing_fields', 'my_woocommerce_billing_fields_vat_nr_is_required' );

/**
* Vat Number field is required in checkout
*
* @author MarketPress
* @wp-hook woocommerce_billing_fields
* @param Array $address_fields
* @return Array
**/
function my_woocommerce_billing_fields_vat_nr_is_required( $address_fields ) {

	if ( isset( $address_fields[ 'billing_vat' ] ) ) {
		$address_fields[ 'billing_vat' ][ 'required' ] = true;
	}

	return $address_fields;
}