MAGETWO-91335: Manufacturer attribute not appearing in Configurable Products on the backend

Author: viktym

app/code/Magento/ConfigurableProduct/Setup/Patch/Data/InstallInitialConfigurableAttributes.php

@@ -51,6 +51,7 @@ public function apply()
         $eavSetup = $this->eavSetupFactory->create(['setup' => $this->moduleDataSetup]);
         $attributes = [
             'country_of_manufacture',
+            'manufacturer',
             'minimal_price',
             'msrp',
             'msrp_display_actual_price_type',

app/code/Magento/ConfigurableProduct/Setup/Patch/Data/UpdateManufacturerAttribute.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\ConfigurableProduct\Setup\Patch\Data;
+
+use Magento\Eav\Setup\EavSetup;
+use Magento\Eav\Setup\EavSetupFactory;
+use Magento\Framework\Setup\ModuleDataSetupInterface;
+use Magento\Framework\Setup\Patch\DataPatchInterface;
+use Magento\Framework\Setup\Patch\PatchVersionInterface;
+use Magento\ConfigurableProduct\Model\Product\Type\Configurable;
+
+/**
+ * Class UpdateManufacturerAttribute
+ * @package Magento\ConfigurableProduct\Setup\Patch
+ */
+class UpdateManufacturerAttribute implements DataPatchInterface, PatchVersionInterface
+{
+    /**
+     * @var ModuleDataSetupInterface
+     */
+    private $moduleDataSetup;
+
+    /**
+     * @var EavSetupFactory
+     */
+    private $eavSetupFactory;
+
+    /**
+     * UpdateTierPriceAttribute constructor.
+     * @param ModuleDataSetupInterface $moduleDataSetup
+     * @param EavSetupFactory $eavSetupFactory
+     */
+    public function __construct(
+        ModuleDataSetupInterface $moduleDataSetup,
+        EavSetupFactory $eavSetupFactory
+    ) {
+        $this->moduleDataSetup = $moduleDataSetup;
+        $this->eavSetupFactory = $eavSetupFactory;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply()
+    {
+        /** @var EavSetup $eavSetup */
+        $eavSetup = $this->eavSetupFactory->create(['setup' => $this->moduleDataSetup]);
+        $relatedProductTypes = explode(
+            ',',
+            $eavSetup->getAttribute(\Magento\Catalog\Model\Product::ENTITY, 'manufacturer', 'apply_to')
+        );
+        $key = array_search(Configurable::TYPE_CODE, $relatedProductTypes);
+        if ($key !== false) {
+            unset($relatedProductTypes[$key]);
+            $eavSetup->updateAttribute(
+                \Magento\Catalog\Model\Product::ENTITY,
+                'manufacturer',
+                'apply_to',
+                implode(',', $relatedProductTypes)
+            );
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function getDependencies()
+    {
+        return [
+            InstallInitialConfigurableAttributes::class,
+        ];
+    }
+
+    /**
+     * {@inheritdoc}\
+     */
+    public static function getVersion()
+    {
+        return '2.2.1';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getAliases()
+    {
+        return [];
+    }
+}