Out of stock products: why do they appear in Collection::getAllIds and not in Collection::getItems

Question

Im trying to get all products in a collection: out of stock and products in stock. So what I did is:

/** @var $collection \Magentp\Catalog\Model\ResourceModel\Product\Collection */
$collection = $this->productCollectionFactory->create();
$collection->addAttributeToSelect('*');
$collection->addAttributeToFilter('visibility', \Magento\Catalog\Model\Product\Visibility::VISIBILITY_BOTH);
$collection->addAttributeToFilter('status', \Magento\Catalog\Model\Product\Attribute\Source\Status::STATUS_ENABLED);
$collection->sePageSize(3);
$collection->setCurPage(1);

Now, when I use a foreach() loop with $collection->getItems() as the array expression, it just shows the products that have stock, but when I use the $collection->getAllIds() instead, it includes the products out of stock.

Can anyone explain why?

Answer 1

By default magento filters only in stock products in collection. We have to set the in stock filter as false.

$productCollection = $_objectManager->create('Magento\Catalog\Model\ResourceModel\Product\CollectionFactory');

$collection = $productCollection->create()->setFlag('has_stock_status_filter', false)->load();

And information this link ---

How to get product collection with both in stock and out of stock products in Magento 2.1

Hope this help you

Thanks ...