How to make the second address field required during checkout?

Question

I have config set to display 2 lines for address during checkout (Configuration → Customer → Customer Configuration → Name and Address Options):

Number of lines in a street address: 2

How can I make the second line a required field? Only the first field seems to be required. I've looked in the eav_attribute table & can't seem to find it listed there.

Answer 1

If you plan to make the second field mandatory for the checkout, you should make it mandatory in the customer add/edit address form for consistency.

For the client side validation you need to edit each template that holds an address for and add required-entry class on the second row. Here are the templates I found for this:

• customer/form/address.phtml
• customer/address/edit.phtml
• persistent/customer/form/register.phtml
• customer/form/register.phtml
• checkout/onepage/billing.phtml
• checkout/onepage/shipping.phtml
• paypal/express/review/address.phtml
• persistent/checkout/onepage/billing.phtml

As for server side validation you need to copy the file

app/code/core/Mage/Customer/Model/Address.php to the local folder /app/code/local/Mage/Customer/Model/Address.php. You cannot extend this class because the class is never instantiated.
And you need to add something in the validate method.

After this section:

    if (!Zend_Validate::is($this->getStreet(1), 'NotEmpty')) {
        $errors[] = Mage::helper('customer')->__('Please enter the street.');
    }

Add the validation for the second row

    if (!Zend_Validate::is($this->getStreet(2), 'NotEmpty')) {
        $errors[] = Mage::helper('customer')->__('Please enter the correct street.');
    }