Magento2 Copy Customer name to invoice billing address name

Question

• For billing issues i want to use default customer name as same billing address in invoice only.
• i.e Customer name is John Doe and he use Johny Doe in billing address when he order. it is ok for order but when invoice will create it should update to John Doe in billing address in invoice only.
• He may pay by online of offline whatever.

How can i achieve it?

Answer 1

Since the invoice uses the billing adress object of the order you can't save changes in the billing address which should affect only the invoice.

But you can try to use a plugin after the method getBillingAddress() in the invoice model (Magento\Sales\Model\Order\Invoice) and overwrite the name fields (prefix, firstname, lastname etc. depending on your configuration / used fields).

A method like this should work for the suggested approach (don't forget to add the plugin in your di.xml) :

public function afterGetBillingAddress(\Magento\Sales\Model\Order\Invoice $subject, $result)
{
    $customer = $subject->getOrder()->getCustomer();
    if ($customer->getId()){
        $result->setFirstname($customer->getFirstname());
        $result->setLastname($customer->getLastname());
        //... add other name fields like prefix, middlename, suffix if needed 
    }
    return $result;
}