delete url rewrites for all products of an attribute set when said at…

app/code/Magento/Catalog/Observer/DeleteUrlKeys.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Catalog\Observer;
+
+use Magento\Framework\App\ResourceConnection;
+use Magento\Framework\Event\ObserverInterface;
+
+/**
+ *  Delete the url key of a product on product deletion
+ */
+class DeleteUrlKeys implements ObserverInterface
+{
+    /** @var ResourceConnection $resourceConnection */
+    private $resourceConnection;
+
+    public function __construct(
+        ResourceConnection $resourceConnection
+        )
+    {
+        $this->resourceConnection = $resourceConnection;
+    }
+
+    /**
+     * Delete the product url key
+     *
+     * @param \Magento\Framework\Event\Observer $observer
+     * @return $this
+     */
+    public function execute(\Magento\Framework\Event\Observer $observer)
+    {
+        $ids = $observer->getEvent()->getProducts();
+        $connection = $this->resourceConnection->getConnection();
+
+        try
+        {
+            $connection->delete('url_rewrite', ['entity_type = ?' => 'product', 'entity_id IN (?)' => $ids]);
+        }
+        catch (\Exception $exception)
+        {
+            throw new CouldNotDeleteException(__(
+                'Could not delete the url rewrite(s): %1',
+                $exception->getMessage()
+            ));
+        }
+
+        return $this;
+    }
+}

app/code/Magento/Catalog/etc/adminhtml/events.xml

@@ -9,4 +9,7 @@
     <event name="cms_wysiwyg_images_static_urls_allowed">
         <observer name="catalog_wysiwyg" instance="Magento\Catalog\Observer\CatalogCheckIsUsingStaticUrlsAllowedObserver" />
     </event>
+    <event name="attribute_set_delete_after">
+        <observer name="delete_url_keys" instance="Magento\Catalog\Observer\DeleteUrlKeys" />
+    </event>
 </config>

app/code/Magento/Eav/Model/AttributeSetRepository.php

@@ -52,18 +52,28 @@ class AttributeSetRepository implements AttributeSetRepositoryInterface
      */
     protected $joinProcessor;
 
+    /**
+     * @var \Magento\Framework\Event\ManagerInterface
+     */
+    private $eventManager;
+
     /**
      * @var CollectionProcessorInterface
      */
     private $collectionProcessor;
 
+    /** @var \Magento\Catalog\Model\ResourceModel\Product\Collection */
+    private $productCollection;
+
     /**
      * @param AttributeSetResource $attributeSetResource
      * @param AttributeSetFactory $attributeSetFactory
      * @param CollectionFactory $collectionFactory
      * @param Config $eavConfig
      * @param \Magento\Eav\Api\Data\AttributeSetSearchResultsInterfaceFactory $searchResultFactory
      * @param \Magento\Framework\Api\ExtensionAttribute\JoinProcessorInterface $joinProcessor
+     * @param \Magento\Framework\Event\ManagerInterface $eventManager
+     * @param \Magento\Catalog\Model\ResourceModel\Product\Collection $productCollection
      * @param CollectionProcessorInterface $collectionProcessor
      * @codeCoverageIgnore
      */
@@ -74,6 +84,8 @@ public function __construct(
         EavConfig $eavConfig,
         \Magento\Eav\Api\Data\AttributeSetSearchResultsInterfaceFactory $searchResultFactory,
         \Magento\Framework\Api\ExtensionAttribute\JoinProcessorInterface $joinProcessor,
+        \Magento\Framework\Event\ManagerInterface $eventManager,
+        \Magento\Catalog\Model\ResourceModel\Product\Collection $productCollection,
         CollectionProcessorInterface $collectionProcessor = null
     ) {
         $this->attributeSetResource = $attributeSetResource;
@@ -82,6 +94,8 @@ public function __construct(
         $this->eavConfig = $eavConfig;
         $this->searchResultsFactory = $searchResultFactory;
         $this->joinProcessor = $joinProcessor;
+        $this->eventManager = $eventManager;
+        $this->productCollection = $productCollection;
         $this->collectionProcessor = $collectionProcessor ?: $this->getCollectionProcessor();
     }
 
@@ -156,13 +170,19 @@ public function get($attributeSetId)
      */
     public function delete(AttributeSetInterface $attributeSet)
     {
+        // Get the affected product ids
+        $productIds = $this->productCollection
+            ->addFieldToFilter('attribute_set_id', $attributeSet->getAttributeSetId())->getAllIds();
+
         try {
             $this->attributeSetResource->delete($attributeSet);
+            $this->eventManager->dispatch('attribute_set_delete_after', ['products' => $productIds]);
         } catch (\Magento\Framework\Exception\StateException $exception) {
             throw new CouldNotDeleteException(__('Default attribute set can not be deleted'));
         } catch (\Exception $exception) {
             throw new CouldNotDeleteException(__('There was an error deleting attribute set.'));
         }
+
         return true;
     }