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Is there any possibility to get attribute data difference between model versions? I create observer for catalog_product_save_after action, and now i want to make some changes only if attribute product_versions has changed.

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up vote 3 down vote accepted

Try this:

$newValue = $product->getData('product_versions');
$oldValue = $product->getOrigData('product_versions');

Now check if the 2 values are different. If they are, do your magic.

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Something similar here too stackoverflow.com/questions/8182009/get-product-changes – mbalparda Aug 5 '14 at 11:14

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