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How to set a product's custom attribute on save? I have used the event/observer way but nothing works.

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Official method should work, but Not

The official method setCustomAttribute($attributeCode, $attributeValue) below should work but NOT because the official bug https://github.com/magento/magento2/issues/4703.

The bug doesn't fix yet in version 2.2.3.

$product = $this->productRepository->getById($productId);
$product->setCustomAttribute($attributeCode, $attributeValue);
$this->productRepository->save($product);

Temporary method

After many debug and tries, I found the method $product->setData($attributeCode, $attributeValue) below could set custom attribute successfully, it is a temporary method.

Hope it could help you. Any better way is welcome to post :)

$product = $this->productRepository->getById($productId);
$product->setData($attributeCode, $attributeValue);
$this->productRepository->save($product);
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    $objectManager = \Magento\Framework\App\ObjectManager::getInstance(); // instance of object manager
            $product = $objectManager->create('\Magento\Catalog\Model\Product');

            $prod = $product->loadByAttribute('sku', $sku);
$prod->setCustomattribute($value); // name of your custom attribute
$prod->save();
  • got this error SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded; try restarting transaction, query was: INSERT INTO catalog_product_entity_int (entity_id,attribute_id,value,store_id) VALUES (?, ?, ?, ?) ON DUPLICATE KEY UPDATE entity_id = VALUES(entity_id), attribute_id = VALUES(attribute_id), value = VALUES(value), store_id = VALUES(store_id) – Jay Kapoor Sep 6 '17 at 11:28
  • i used the catalog_product_save_after event/observer method for this – Jay Kapoor Sep 6 '17 at 11:28
  • please add code here – Ashar Riaz Sep 6 '17 at 11:34
  • check link magento.stackexchange.com/questions/192201/… – Jay Kapoor Sep 6 '17 at 11:40
  • i posted a new question – Jay Kapoor Sep 6 '17 at 11:40

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