Remove last name in billing address?

I'm sure you have this figured out by now but it might help someone else.

I am using Magento CE 1.9.2. In addition to what you have already done, try this:

1. Comment/delete required class in app/design/frontend/PACKAGE/THEME/template/persistent/checkout/onepage/billing.phtml. You might also have to do the shipping.phtml as well depending on your needs.

2. Change the validation rules in customer_eav_attribute table for the attribute id you are changing (get it from the eav_attribute table)

I have used 1.9.2.4 and followed the below steps and it worked fine.

1. Remove the classes for JS validation from your templates. customer/widget/name.phtml Remove class="required" from the label relating to the ‘lastname’ field Remove

   <?php echo $this->helper('customer/address')->getAttributeValidationClass('lastname') ?> from the input relating to ‘lastname’ 

2. Copy your core files from:

   • /app/code/core/Mage/customer/Model/Address/Abstract.php
   • /app/code/core/Mage/customer/Model/Customer.php

   into:

   • /app/code/local/Mage/customer/Model/Address/Abstract.php
   • /app/code/local/Mage/customer/Model/Customer.php

   And comment out everything related to Zend validation of Lastname.

   /app/code/local/Mage/customer/Model/Address/Abstract.php:

    /* if (!Zend_Validate::is($this->getLastname(), 'NotEmpty')) { $this->addError(Mage::helper('customer')->__('Please enter the last name.')); } */ 

   /app/code/local/Mage/customer/Model/Customer.php

    /* if (!Zend_Validate::is( trim($this->getLastname()) , 'NotEmpty')) { $errors[] = Mage::helper('customer')->__('The last name cannot be empty.'); } */ 

3. Update the config.xml file for customer /app/code/core/Mage/customer/etc/config.xml

   <lastname> <billing>1</billing> <shipping>1</shipping> <required>0</required> <mapped>1</mapped> </lastname> 

4. Update the eav_attribute database table to remove the required flag

   UPDATE eav_attribute SET is_required = 0 WHERE attribute_code = 'lastname' 

5. Update the validation rules in the customer_eav_attribute table

   UPDATE customer_eav_attribute SET validate_rules = 'a:1:{s:15:"max_text_length";i:255;}' WHERE customer_eav_attribute.attribute_id = 7; UPDATE customer_eav_attribute SET validate_rules = 'a:1:{s:15:"max_text_length";i:255;}' WHERE customer_eav_attribute.attribute_id = 22;