Product Attributes: How To Adjust on Magento ®

First, you need to open the file app/code/core/Mage/Adminhtml/Block/Catalog/Product/Grid.php.

Then, locate the line $this->getMassactionBlock()->addItem(‘attributes’, array(.

You need to paste the following code above that line:

$sets = Mage::getResourceModel('eav/entity_attribute_set_collection')
      ->setEntityTypeFilter(Mage::getModel('catalog/product')->getResource()->getTypeId())
      ->load()
      ->toOptionHash();
  array_unshift($statuses, array('label'=>'', 'value'=>''));
  $this->getMassactionBlock()->addItem('attribute_set', array(
       'label'=> Mage::helper('catalog')->__('Change attribute set'),
       'url'  => $this->getUrl('*/*/massAttributeSet', array('_current'=>true)),
       'additional' => array(
              'visibility' => array(
                   'name' => 'attribute_set',
                   'type' => 'select',
                   'class' => 'required-entry',
                   'label' => Mage::helper('catalog')->__('Change attribute set),
                   'values' => $sets
               )
       )
  ));

In order to continue modification – open the file app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php.

Locate the line ‘protected function _isAllowed()’ and paste the following code above that line:

public function massAttributeSetAction()
{
    $productIds = $this->getRequest()->getParam('product');
    $storeId = (int)$this->getRequest()->getParam('store', 0);
    if(!is_array($productIds)) {
        $this->_getSession()->addError($this->__('Please select product(s)'));
    } else {
        try {
            foreach ($productIds as $productId) {
                $product = Mage::getSingleton('catalog/product')
                    ->unsetData()
                    ->setStoreId($storeId)
                    ->load($productId)
                    ->setAttributeSetId($this->getRequest()->getParam('attribute_set'))
                    ->setIsMassupdate(true)
                    ->save();
            }
            Mage::dispatchEvent('catalog_product_massupdate_after', array('products'=>
            $productIds));
            $this->_getSession()->addSuccess(
                $this->__('Total of %d record(s) were successfully updated', 
                count($productIds))
            );
        } catch (Exception $e) {
            $this->_getSession()->addError($e->getMessage());
        }
    }
    $this->_redirect('*/*/', array('store'=>(int)$this->getRequest()->
    getParam('store', 0)));
}

After the changes in those files are saved the option ‘Change attribute set’ will appear in Catalog -> Manage products -> Actions menu and you can use it to further make the necessary changes.

If you have any problems or additional questions please feel free to consult with our experts in Magento ®.