Do not save customer addresses when there are no changes (#1579)

Author: luigifab

app/code/core/Mage/Customer/Model/Customer.php

@@ -421,9 +421,11 @@ public function getAddressesCollection()
         if ($this->_addressesCollection === null) {
             $this->_addressesCollection = $this->getAddressCollection()
                 ->setCustomerFilter($this)
-                ->addAttributeToSelect('*');
+                ->addAttributeToSelect('*')
+                ->setOrder('entity_id', 'desc');
             foreach ($this->_addressesCollection as $address) {
                 $address->setCustomer($this);
+                $address->setDataChanges(false);
             }
         }
 

app/code/core/Mage/Customer/Model/Resource/Customer.php

@@ -134,8 +134,8 @@ protected function _afterSave(Varien_Object $customer)
      */
     protected function _saveAddresses(Mage_Customer_Model_Customer $customer)
     {
-        $defaultBillingId   = $customer->getData('default_billing');
-        $defaultShippingId  = $customer->getData('default_shipping');
+        $defaultBillingId  = $customer->getData('default_billing');
+        $defaultShippingId = $customer->getData('default_shipping');
         foreach ($customer->getAddresses() as $address) {
             if ($address->getData('_deleted')) {
                 if ($address->getId() == $defaultBillingId) {
@@ -146,10 +146,19 @@ protected function _saveAddresses(Mage_Customer_Model_Customer $customer)
                 }
                 $address->delete();
             } else {
-                $address->setParentId($customer->getId())
-                    ->setStoreId($customer->getStoreId())
-                    ->setIsCustomerSaveTransaction(true)
-                    ->save();
+                if ($address->getParentId() != $customer->getId()) {
+                    $address->setParentId($customer->getId());
+                }
+
+                if ($address->hasDataChanges()) {
+                    $address->setStoreId($customer->getStoreId())
+                        ->setIsCustomerSaveTransaction(true)
+                        ->save();
+                } else {
+                    $address->setStoreId($customer->getStoreId())
+                        ->setIsCustomerSaveTransaction(true);
+                }
+
                 if (($address->getIsPrimaryBilling() || $address->getIsDefaultBilling())
                     && $address->getId() != $defaultBillingId
                 ) {