How to save only specific attribute value rather than saving the whole product in Magento2

Question

As you guys already know that we used to have this below method in magento to save a specific attribute value like this.

// saving product attribute
$product = Mage::getModel('catalog/product')->load('id here');
$product->setName('your name here');
$product->getResource()->saveAttribute($product, 'name');

or

// saving customer attribute
$customer->setData($attrCode, $value)->getResource()->saveAttribute($customer, $attrCode);

Can anyone let me know the alternative of the above in Magento2 .

Answer 1

Its the same as Magento 1

$dataobject->setData('attribute_code', $value);
$dataobject->getResource()->saveAttribute($dataobject, 'attribute_code');

This will work for any entity.

As per @Raphael's Answer It will not work for sales attributes.

Basically it calls Magento\Eav\Model\Entity\AbstractEntity::saveAttribute() function.

This will accept two parameters

saveAttribute(\Magento\Framework\DataObject $object, $attributeCode)

First to be $object is an object which needs to be updated and second parameter will be $attributeCode which is the code for the attribute to be updated.

Answer 2

In the case of product, you can use the mass action object. For example:

// Edit
$productIds = [123];
$attributesData = ['name' => 'new product name'];
$storeId = 0;
$productMassAction = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Catalog\Model\Product\Action');
$productMassAction->updateAttributes($productIds, $attributesData, $storeId);

Answer 3

Just to clarify Jaimin's answer:

This will work for any entity.

This is not true. It will only work for EAV entities which extend Magento\Eav\Model\Entity\AbstractEntity

If you're dealing with a non EAV entity where the resource model extends Magento\Framework\Model\ResourceModel\Db\AbstractDb you will have to implement the saveAttribute method in your resource model.

In Magento 2, they have done it for the Magento\Sales\Model\ResourceModel\Attribute class:

public function saveAttribute(AbstractModel $object, $attribute)
{
    if ($attribute instanceof AbstractAttribute) {
        $attributes = $attribute->getAttributeCode();
    } elseif (is_string($attribute)) {
        $attributes = [$attribute];
    } else {
        $attributes = $attribute;
    }
    if (is_array($attributes) && !empty($attributes)) {
        $this->getConnection()->beginTransaction();
        $data = array_intersect_key($object->getData(), array_flip($attributes));
        try {
            $this->_beforeSaveAttribute($object, $attributes);
            if ($object->getId() && !empty($data)) {
                $this->getConnection()->update(
                    $object->getResource()->getMainTable(),
                    $data,
                    [$object->getResource()->getIdFieldName() . '= ?' => (int)$object->getId()]
                );
                $object->addData($data);
            }
            $this->_afterSaveAttribute($object, $attributes);
            $this->getConnection()->commit();
        } catch (\Exception $e) {
            $this->getConnection()->rollBack();
            throw $e;
        }
    }
    return $this;
}

Answer 4

You can save a product attribute value based on product id without saving the whole product itself. This saves a lot of time, especially when you have to update a bunch of products.

<?php

namespace Company\Module\Model;

use Magento\Catalog\Model\Product\Action;

class SomeClass
{
    /**
     * @var Action
     */
    private Action $productAction;

    /**
     * @param Action $productAction
     */
    public function __construct(
        Action $productAction
    ) {
        $this->productAction = $productAction;
    }

    public function someFunction($product)
    {
        $productIds = [$product->getId()]; // Array with one or more product ids
        $attributeUpdates = ['attribute_code' => 'value']; // Array with one or more attribute updates
        $storeId = \Magento\Store\Model\Store::DEFAULT_STORE_ID; // Scope id

        $this->productAction->updateAttributes(
            $productIds,
            $attributeUpdates,
            $storeId
        );
    }
}