Custom field not showing on order details (admin)

Question

I created three new fields in the register address, I need to show them in the order details. I tried adding them going:

System > Customers > Settings > Templates Address

And added the fields with the same name that is in the database. Here's an example of how I tried:

{{number_address}}
{{depend number_address}}{{var number_address}}{{/depend}}
{{if number_address}}{{var number_address}},  {{/if}}

Answer 1

I've read this tutorial: http://www.magentocommerce.com/wiki/5_-_modules_and_development/how_to_add_custom_field_in_billing_and_shipping_address_in_frontend_and_backend

Check the attribute creation:

foreach ($attributes as $attributeCode => $data) {
    $attribute = $eavConfig->getAttribute('customer_address', $attributeCode);
    $attribute->setWebsite($store->getWebsite());
    $attribute->addData($data);
        $usedInForms = array(
            'adminhtml_customer_address',
            'customer_address_edit',
            'customer_register_address'
        );
        $attribute->setData('used_in_forms', $usedInForms);
    $attribute->save();
}

See the $usedInForms array ? Try to insert the handles of order details pages there.

It may not suffice, but I think it's necessary.