Magento 2 Associate simple product to Configurable product

Question

I need to import 40,000 product from xls so that reason I wrote an importer, I already did for magento 1.x but we switch our web site magento 2, I can create simple and configurable product programatically but I cant associate simple product to configurable product, This is the best documentation I followed,

Programmatically create a configurable product and assign the simple product to configurable product in Magento2 product

But I stuck configurable product options always throw an error,

Call to a member function getId() on array in .../vendor/magento/module-configurable-product/Model/Plugin/AroundProductRepositorySave.php on line 109

Here is my code,

$configurableProductOptions = [
[
"attribute_id" =>  137,
"label" => 'size',
"position" => 0,
"values" => [
[
"value_index" =>  333,
],
[
"value_index" =>  334,
]
],
]
];

$product->setCanSaveConfigurableAttributes(true);
$product->setCanSaveCustomOptions(true);
$productExtensionFactory= $objectManager->create('\Magento\Catalog\Api\Data\ProductExtensionFactory');
$productExtension = $productExtensionFactory->create();
$productExtension->setConfigurableProductLinks($sipmle_product_ids);
$productExtension->setConfigurableProductOptions([
                                                $configurableProductOptions
                                                 ]);
$product->setExtensionAttributes($productExtension);
$productRepository = $objectManager->create(Magento\Catalog\Api\ProductRepositoryInterface::class);

$productRepository->save($product,true);

I m totaly sure something wrong in '$configurableProductOptions' tried almost everything but didnt succeed any ideas or anyone can share code to associate simple product as a configurable I can figured out from that code.

Answer 1

Looks like you need to add StockItem extension attribute to your configurable product.

See how Magento developer do it in the test fixture product_configurable.php

Answer 2

/* Associate simple product to configurable*/

    $associatedProductIds = array($simplProductId);// array of all simple product ids
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $product = $objectManager->create('Magento\Catalog\Model\Product')->load($configProductId); // Load Configurable Product
    $attributeModel = $objectManager->create('Magento\ConfigurableProduct\Model\Product\Type\Configurable\Attribute');
    $position = 0;
    $attributes = array($attributeColorId, $attributeSizeId); // Super Attribute Ids Used To Create Configurable Product
    foreach ($attributes as $attributeId) {
        $data = array('attribute_id' => $attributeId, 'product_id' => $configProductId, 'position' => $position);
        $position++;
        $attributeModel->setData($data);//->save();
    }
    $product->setTypeId("configurable");
    $product->setAffectConfigurableProductAttributes($attributeSetId);
    $objectManager->create('Magento\ConfigurableProduct\Model\Product\Type\Configurable')->setUsedProductAttributeIds($attributes, $product);
    $product->setNewVariationsAttributeSetId($attributeSetId);
    $product->setAssociatedProductIds($associatedProductIds);// Setting Associated Products
    $product->setCanSaveConfigurableAttributes(true);
    $product->save();

It worked fine for me.