How to discontinue product backend settings?

To achieve this, create a basic module and below code in InstallSchema.php file.

Change the vendor namespace and module name as per your requirement.

<?php
namespace Magemonkeys\Discontinue\Setup;

use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

class InstallData implements InstallDataInterface
{
    private $eavSetupFactory;

    public function __construct(EavSetupFactory $eavSetupFactory)
    {
        $this->eavSetupFactory = $eavSetupFactory;
    }

    public function install(
        ModuleDataSetupInterface $setup,
        ModuleContextInterface $context
    )
    {
        /** @var EavSetup $eavSetup */
        $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);

        /**
         * Add attributes to the eav/attribute
         */
           $eavSetup->addAttribute(
            \Magento\Catalog\Model\Product::ENTITY,
            'discontinue',
            [
                'group' => 'Discontinue Product Information',
                'type' => 'int',
                'backend' => '',
                'frontend' => '',
                'label' => 'Discontinue',
                'input' => 'boolean',
                'class' => '',
                'source' => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',
                'global' => \Magento\Catalog\Model\ResourceModel\Eav\Attribute::SCOPE_GLOBAL,
                'visible' => true,
                'required' => false,
                'user_defined' => false,
                'default' => false,
                'searchable' => false,
                'filterable' => false,
                'comparable' => false,
                'visible_on_front' => false,
                'used_in_product_listing' => true,
                'unique' => false
            ]
        );

           /**
         * Add attributes to the eav/attribute
         */
           $eavSetup->addAttribute(
            \Magento\Catalog\Model\Product::ENTITY,
            'alternate_product_url',
            [
                 'group' => 'Discontinue Product Information',
                 'type' => 'text',
                 'backend' => '',
                 'frontend' => '',
                 'label' => 'Alternate Product URL',
                 'input' => 'text',
                 'class' => '',
                 'source' => '',
                 'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
                 'visible' => false,
                 'required' => false,
                 'user_defined' => false,
                 'default' => '',
                 'searchable' => false,
                 'filterable' => false,
                 'comparable' => false,
                 'visible_on_front' => true,
                 'used_in_product_listing' => true,
                 'unique' => false,
                 'apply_to' => ''
            ]
        );
           $eavSetup->addAttribute(
            \Magento\Catalog\Model\Product::ENTITY,
            'alternate_product_sku',
            [
                 'group' => 'Discontinue Product Information',
                 'type' => 'text',
                 'backend' => '',
                 'frontend' => '',
                 'label' => 'Alternate Product SKU',
                 'input' => 'text',
                 'class' => '',
                 'source' => '',
                 'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,
                 'visible' => true,
                 'required' => false,
                 'user_defined' => false,
                 'default' => '',
                 'searchable' => false,
                 'filterable' => false,
                 'comparable' => false,
                 'visible_on_front' => true,
                 'used_in_product_listing' => true,
                 'unique' => false,
                 'apply_to' => ''
            ]
        );
    }
}

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<?php

namespace Magemonkeys\Discontinue\Setup;

use Magento\Eav\Setup\EavSetup;

use Magento\Eav\Setup\EavSetupFactory;

use Magento\Framework\Setup\InstallDataInterface;

use Magento\Framework\Setup\ModuleContextInterface;

use Magento\Framework\Setup\ModuleDataSetupInterface;

class InstallData implements InstallDataInterface

{

private $eavSetupFactory;

public function __construct(EavSetupFactory $eavSetupFactory)

{

$this->eavSetupFactory = $eavSetupFactory;

}

public function install(

ModuleDataSetupInterface $setup,

ModuleContextInterface $context

)

{

/** @var EavSetup $eavSetup */

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

/**

* Add attributes to the eav/attribute

$eavSetup->addAttribute(

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

'discontinue',

[

'group' => 'Discontinue Product Information',

'type' => 'int',

'backend' => '',

'frontend' => '',

'label' => 'Discontinue',

'input' => 'boolean',

'class' => '',

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

'global' => \Magento\Catalog\Model\ResourceModel\Eav\Attribute::SCOPE_GLOBAL,

'visible' => true,

'required' => false,

'user_defined' => false,

'default' => false,

'searchable' => false,

'filterable' => false,

'comparable' => false,

'visible_on_front' => false,

'used_in_product_listing' => true,

'unique' => false

]

);

/**

* Add attributes to the eav/attribute

$eavSetup->addAttribute(

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

'alternate_product_url',

[

'group' => 'Discontinue Product Information',

'type' => 'text',

'backend' => '',

'frontend' => '',

'label' => 'Alternate Product URL',

'input' => 'text',

'class' => '',

'source' => '',

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

'visible' => false,

'required' => false,

'user_defined' => false,

'default' => '',

'searchable' => false,

'filterable' => false,

'comparable' => false,

'visible_on_front' => true,

'used_in_product_listing' => true,

'unique' => false,

'apply_to' => ''

]

);

$eavSetup->addAttribute(

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

'alternate_product_sku',

[

'group' => 'Discontinue Product Information',

'type' => 'text',

'backend' => '',

'frontend' => '',

'label' => 'Alternate Product SKU',

'input' => 'text',

'class' => '',

'source' => '',

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

'visible' => true,

'required' => false,

'user_defined' => false,

'default' => '',

'searchable' => false,

'filterable' => false,

'comparable' => false,

'visible_on_front' => true,

'used_in_product_listing' => true,

'unique' => false,

'apply_to' => ''

]

);

}

Create a Observer with catalog_product_save _before in adminhtml/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="catalog_product_save_before">
        <observer name="discontinue_product_save_after" instance="Magemonkeys\Discontinue\Observer\Productsavebefore" />
    </event>
</config>

<?xml version="1.0"?>

</event>

</config>

Add Observer file and place the below code in it.

<?php

namespace Magemonkeys\Discontinue\Observer;

use Magento\Framework\Event\ObserverInterface;
use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Framework\Url;
use Magento\Framework\Exception\NoSuchEntityException;

class Productsavebefore implements ObserverInterface
{    

    /**
     * @var ProductRepositoryInterface
     */
    protected $productRepository;

    protected $_url;
 
    /**
     * @param ProductRepositoryInterface $productRepository
     */
    public function __construct(
        ProductRepositoryInterface $productRepository,
        Url $url
    ) {
        $this->productRepository = $productRepository;
        $this->_url = $url;
    }

    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $_product = $observer->getProduct();  // you will get product object

        $sku = $_product->getAlternateProductSku();

        if($sku != '')
        {
            try
            {
                $alternateProduct = $this->productRepository->get($sku);
            }
            catch (NoSuchEntityException $noSuchEntityException) {
                $productUrl = null;
            }

            if($alternateProduct)
            {

                $product = $this->productRepository->getById($alternateProduct->getId(), false);
                //$productUrl = $product->setStoreId(1)->getUrlModel()->getUrlInStore($product, ['_escape' => true]);
                $productUrl = $product->getUrlKey();
                $_product->setData('alternate_product_url', $productUrl);
                
            }
        }
        else
        {
            $productUrl = null;
            $_product->setData('alternate_product_url', $productUrl);
        }

    }   
}

<?php

namespace Magemonkeys\Discontinue\Observer;

use Magento\Framework\Event\ObserverInterface;

use Magento\Catalog\Api\ProductRepositoryInterface;

use Magento\Framework\Url;

use Magento\Framework\Exception\NoSuchEntityException;

class Productsavebefore implements ObserverInterface

{

/**

* @var ProductRepositoryInterface

protected $productRepository;

protected $_url;

/**

* @param ProductRepositoryInterface $productRepository

public function __construct(

ProductRepositoryInterface $productRepository,

Url $url

) {

$this->productRepository = $productRepository;

$this->_url = $url;

}

public function execute(\Magento\Framework\Event\Observer $observer)

{

$_product = $observer->getProduct(); // you will get product object

$sku = $_product->getAlternateProductSku();

if($sku != '')

{

try

{

$alternateProduct = $this->productRepository->get($sku);

}

catch (NoSuchEntityException $noSuchEntityException) {

$productUrl = null;

}

if($alternateProduct)

{

$product = $this->productRepository->getById($alternateProduct->getId(), false);

//$productUrl = $product->setStoreId(1)->getUrlModel()->getUrlInStore($product, ['_escape' => true]);

$productUrl = $product->getUrlKey();

$_product->setData('alternate_product_url', $productUrl);

}

else

{

$productUrl = null;

$_product->setData('alternate_product_url', $productUrl);

}

Create a plugin with aroundGetProduyctCollection to remove the discontinue product from whole site. Please add the below code in that plugin.

<?php

namespace Magemonkeys\Discontinue\Plugin\Magento\Catalog\Model;

class Layer
{

    public function aroundGetProductCollection(
        \Magento\Catalog\Model\Layer $subject,
        \Closure $proceed
    ) {
        $collection = $proceed();
        $collection->addAttributeToSelect('*')->addAttributeToFilter(array(
            array(
                'attribute' => 'discontinue',
                'null' => true),
            array(
                'attribute' => 'discontinue',
                'eq' => '0')
        ));
        return $collection;
    }


}

<?php

namespace Magemonkeys\Discontinue\Plugin\Magento\Catalog\Model;

class Layer

{

public function aroundGetProductCollection(

\Magento\Catalog\Model\Layer $subject,

\Closure $proceed

) {

$collection = $proceed();

$collection->addAttributeToSelect('*')->addAttributeToFilter(array(

array(

'attribute' => 'discontinue',

'null' => true),

array(

'attribute' => 'discontinue',

'eq' => '0')

));

return $collection;

}

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