How to get parent product id in magento 2?

Question

How to get a child's parent product id in Magento 2 for the configurable products?

I want to get the parent product id of child product in Magento based on child product id.

Answer 1

For getting the parent product id in your phtml file, you can call code directly by:

    $productId = 52; //this is child product id
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $product = $objectManager->create('Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable')->getParentIdsByChild($productId);
     if(isset($product[0])){
         //this is parent product id..
         echo $product[0];
    }

Answer 2

You can call it's in block file, Magento specific way by,

protected $_catalogProductTypeConfigurable;

public function __construct(
    \Magento\Catalog\Block\Product\Context $context,
    //for getting parent id of simple
    \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable $catalogProductTypeConfigurable,
    array $data = []
) {
    //for getting parent id of simple
    $this->_catalogProductTypeConfigurable = $catalogProductTypeConfigurable;
    parent::__construct($context, $data);
}

public function getProductData($id) {
    $parentByChild = $this->_catalogProductTypeConfigurable->getParentIdsByChild($id);
    if (isset($parentByChild[0])) {
        //set id as parent product id...
        $id = $parentByChild[0];
    }
    return $id;
}