I\'m trying to add custom fields to the WooCommerce checkout and there seems to be no output for hidden fields.
In woocommerce-template.php
, hidden fie
I'm not sure exactly how you are adding the other non-hidden custom fields, but you can just echo html.
i.e.
Add a hook:
add_action('woocommerce_before_checkout_billing_form', array(&$this, 'custom_before_checkout_billing_form') );
Then in your own function do something like this:
function custom_before_checkout_billing_form($checkout) {
echo '';
}