How does \Magento\ConfigurableProduct\Model\Product\Type\Configurable::getChildrenIds() work?

dmitry_fedyuk · April 30, 2016, 7:14pm

Context: How does \Magento\ConfigurableProduct\Model\Product\ReadHandler::getLinkedProducts() work?

magento/magento2/blob/958164/app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php#L244-L257


/**
 * Retrieve Required children ids
 * Return grouped array, ex array(
 *   group => array(ids)
 * )
 *
 * @param  array|int $parentId
 * @param  bool $required
 * @return array
 */
public function getChildrenIds($parentId, $required = true)
{
    return $this->_catalogProductTypeConfigurable->getChildrenIds($parentId, $required);
}

How does \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable::getChildrenIds() work?