How to update product eav attribute in magento 2

Question

I want to update product custom attribute when custom module is upgraded. Attribute code is product_brand and i want to set it's is_used_for_promo_rules to 1. Any help appreciated.

Answer 1

I used following code

<?php

namespace Custom\Module\Setup; 
use Magento\Framework\Setup\UpgradeDataInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Eav\Setup\EavSetup; 

class UpgradeData implements UpgradeDataInterface 
{
    public function __construct(
        EavSetup $eavSetupFactory
        ) 
    { 
        $this->eavSetupFactory = $eavSetupFactory; 
    } 

    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context) { 
        $setup->startSetup();
        $this->eavSetupFactory->updateAttribute(4,135,'is_used_for_promo_rules',1,null); 
        $setup->endSetup(); 
    } 

}

in updateAttribute 4 is entity type id and 135 is attributer id.

Answer 2

It’s pretty easy when you have the eavSetup in your setup module. It’s only necessary to execute:

$eavSetup->updateAttribute(Product::ENTITY, $attributeCode, $attributeField, $value);

For example, if I want to change the ‘position’ field value of the ‘price’ product attribute:

$eavSetup->updateAttribute('catalog_product', 'price', 'position', 100);

Answer 3

For this ,you have to create UpgradeData script at your custom module.

On this upgradedata script you need to inject Magento\Eav\Setup\EavSetup class and this class has function updateAttribute() which can update is_used_for_promo_rules field value to 1.

Answer 4

Try below UpgradeData.php script.

<?php

namespace Vendor\CustomModule\Setup;

use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Framework\Setup\UpgradeDataInterface;
use Magento\Eav\Setup\EavSetup;

class UpgradeData implements UpgradeDataInterface
{
    /**
     * @var \Magento\Eav\Model\ResourceModel\Entity\Attribute
     */
    protected $_eavAttribute;


    public function __construct(
        EavSetup $eavSetupFactory,
        \Magento\Eav\Model\ResourceModel\Entity\Attribute $eavAttribute
    ) {
        $this->eavSetupFactory = $eavSetupFactory;
        $this->_eavAttribute = $eavAttribute;
    }

    /**
     * @param ModuleDataSetupInterface $setup
     * @param ModuleContextInterface $context
     */

    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {
        if (version_compare($context->getVersion(), '1.0.1', '<')) {
            $setup->startSetup();
            $entityType = $this->eavSetupFactory->getEntityType(\Magento\Customer\Model\Customer::ENTITY);
            $entityTypeId = $entityType['entity_type_id'];
            $attributeId = $this->_eavAttribute->getIdByCode(\Magento\Customer\Model\Customer::ENTITY, 'prefix');
            $this->eavSetupFactory->updateAttribute($entityTypeId, $attributeId, 'is_required', 0, null);
            $setup->endSetup();
        }
    }
}

Answer 5

Follow these steps to update the attributes of the products

use Magento\Catalog\Model\ResourceModel\Product\Action;

class UpdateAttributes
{

    protected $_updateAction;

public function __construct(

        Action $action

)
{

        $this->_updateAction = $action;

}

public yourfunction(){

$this->_updateAction->updateAttributes($productId,
['is_used_for_promo_rules'=>1],0);

}