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Changing an Existing Product to Have an Attribute Set

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With Magento, you have the ability of adding attribute sets really easy.  That is, if you have a group of product which all have the same options – you do not have to create those options repetitively (and tediously) with each product – instead you create an Attribute set.

For instance, say you’ve got a category on your web-site which sells computer monitors.  You also need to establish attributes within product the resoliton, screen size, and brightness of the monitor.  Rather than going into each product one by one and adding those three options, you merely create a single attribute set, called “Monitor” (for example).  Then, when you create a product in Magento, its simply a case of selecting the attibute set you want to apply to the product, and hey presto, your job is done!

HOWEVER, at the moment – if you create a “Simple product” – like many people would usually do when they are starting out with Magento, you’ll encounter a problem.  Once you’ve selected what type of product it is, you cannot go back and change or add an attribute set to the product – until now…

Pasting the code below into certain Magento files will alleviate the problem.  You can then simply go into Admin > Manage Products, select multiple products using checkboxes, and use the drop down box at the top-right of the screen to change the Attribute Sets of multiple products at once.  Now didn’t that save a lot of time..!

In app/code/core/Mage/Adminhtml/Block/Catalog/Product/Grid.php around line 253 ad:

$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')->__('Attribute Set'),
'values' => $sets
)
)
));

And then in app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php (anywhere in the class) add a new function:

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)));
}

Hope this helps!

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about the author

    This article was written by Sam Davis on October 17, 2008.
    Computing over a glass of Grenache Shiraz... again!
    Sam is the Editor of Blasted Thing. Contact Us

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