How to get associated products from its configurable product

How to get associated products from its configurable product

Today we will see how to get associated products from its configurable product in magento 2.

<?php

namespace Webkul\Module\Controller\Product;

use Magento\Catalog\Model\Product;

class DemoClass extends \Magento\Framework\App\Action\Action
{
    /**
     * Product $product
     */
    private $product;

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        Product $product
    ) {
        parent::__construct($context);
        $this->product = $product;
    }

    public function execute()
    {
        $id = 1; // id of a configurable product
        $configurable = $this->product->load($id);
        $children = $configurable
                      ->getTypeInstance()
                      ->getUsedProducts($configurable);
        foreach ($children as $child) {
            echo $child->getEntityId();
        }
    }
}

Here $child->getEntityId() will print the associated product ids.

But by using getUsedProducts() we will not get those associated products that are out of stock. So in place of it if we write

$children = $configurable
              ->getTypeInstance()
              ->getChildrenIds($configurable->getId());

then we can get all the associated product ids of that configurable product.

I hope this helps.

Happy coding 🙂

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