In Magento, multiselect attribute values are saved as comma separated values.

For example, an arbitrary multiselect attribute id “my_option” has the following values:

1. Option1

2. Option2

3. Option3

We need to load the product by ID or by SKU. Once, a product object is loaded, to update the attribute value, do the following code:

<?php 
//save multiselcet product attribute values
$attrCode = ‘my_options';
$sourceModel = Mage::getModel('catalog/product')
                    ->getResource()
                    ->getAttribute($attrCode)
                    ->getSource();
$valuesText = explode(',', 'Option1,Option2');
$valuesIds = array_map(array($sourceModel, 'getOptionId'), $valuesText);
$_product->setData($attrCode, $valuesIds);
$_product->save();

?>

That’s all.

 

Cheers!

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Product Attribute Related

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