how to add EAV attribute for product in Magento 2

This function belongs to Boolean expression that you can on or off. The following steps explains you how to add EAV attribute for product in Magento 2.

The listed below are examples of Upgrade Data.php file:

1. Declare EAV setup factory
2. Add EAV attribute
3. Remove EAV attribute for product

Declare EAV setup factory

  /**

     * @var EavSetupFactory

     */

    protected $eavSetupFactory;

    /**

     * UpgradeData constructor

     *

     * @param EavSetupFactory $eavSetupFactory

     */

    public function __construct(EavSetupFactory $eavSetupFactory)

    {

        $this->eavSetupFactory = $eavSetupFactory;

    }

Add EAV attribute

To add EAV attribute for product the following code:

/** @var EavSetup $eavSetup */

            $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);

            /**

            * Add attributes to the eav/attribute

            */

            $eavSetup->addAttribute(

                \Magento\Catalog\Model\Product::ENTITY,

                'is_featured',

                [

                    'group' => 'General',

                    'type' => 'int',

                    'backend' => '',

                    'frontend' => '',

                    'label' => 'Is Featured',

                    'input' => 'boolean',

                    'class' => '',

                    'source' => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',

                    'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,

                    'visible' => true,

                    'required' => false,

                    'user_defined' => false,

                    'default' => '1',

                    'searchable' => false,

                    'filterable' => false,

                    'comparable' => false,

                    'visible_on_front' => false,

                    'used_in_product_listing' => false,

                    'unique' => false,

                    'apply_to' => ''

                ]

            );

The following code description:

• Is_featured: attribute code
• Group: It is the attribute name which will show on backend
• Type: data type which will store in database
• Globar: scale of attribute(store,website,global)
• Visible_on_frontend: it permits the attribute to showed on frontend or no
• Apply to: product type that you need to include attribute

Remove attribute to the product

The following code to eliminate attribute to the product:

$entityTypeId = 4; // Find these in the eav_entity_type table

            $eavSetup->removeAttribute($entityTypeId, 'is_featured');

I hope, the above mentioned steps assist you to add EAV attribute to the product in magento 2