Downloadable product on Magento 2.3.1 out of stock issue

Question

I'm issuing a problem with newly created downloadable products on Magento 2.3.1

This store contains about 10k products (phisical and digital) imported from M1

• Phisical in stock/out of stock is working both for imported and native products
• Digital in stock/out of stock is working only for M1 imported products.

I compared the records of 2 digital products (1 imported and 1 native) in all %stock% database tables and the only strange things I noticed is that:

• M2 native downloadable product has several records on cataloginventory_stock_cl table
• M2 imported downloadable product has no records on cataloginventory_stock_cl table

What is the use of cataloginventory_stock_cl table?

There are other places where I can find to debug this problem?

Answer 1

In our case the issue was related to a migration from Magento 1 to Magento 2 via migration data tool. The problem is that default value for the attribute 'links_exist' is 0 in Magento 1. However in Magento 2 default value for 'links_exist' is null. Because of that following validation fails

File: vendor/magento/module-catalog/view/frontend/templates/product/view/addtocart.phtml
Line 13: <?php if ($_product->isSaleable()): ?>

which leads to

File: vendor/magento/module-catalog/Model/Product.php
Line 1805: return $this->isSalable();
Line 1748: $salable = $this->isAvailable();
Line 1766: return $this->_catalogProduct->getSkipSaleableCheck() || $this->getTypeInstance()->isSalable($this);

Last part is important: $this->getTypeInstance()->isSalable($this);. In case of a downloadable product following validation happens:

File: vendor/magento/module-downloadable/Model/Product/Type.php
Line 334: return $this->hasLinks($product) && parent::isSalable($product);

This validation will return false for new created downloadables because of mentioned default value 0 for links_exist.

File: vendor/magento/module-downloadable/Model/Product/Type.php

Line 169-176:

public function hasLinks($product)
{
    $hasLinks = $product->getData('links_exist');
    if (null === $hasLinks) {
        $hasLinks = (count($this->getLinks($product)) > 0);
    }
    return $hasLinks;
}

Here your can see that Magento 2 expects null before even considering counting links.

That all said the issue is only related to newly created downloadables. Imported ones will most likely have a different value for links_exist which will pass mentioned validation.

Our solution was to manually change the default value for links exist in eav_attributes table. This should solve the issue for new downloadables.

Hope I could help.

Edit: This bug is already reported on GitHub see: GitHub Issue.

Edit 2:

For downloadables that were created with a wrong default value for links_exist it is necessary to change the attribute value in catalog_product_entity_int. Following query will help (substitute attribute_id and entity_id appropriately):

UPDATE catalog_product_entity_int SET value=null WHERE attribute_id="attribute id of links_exist" AND entity_id="insert product id here";

You can find attribute_id of links_exist in eav_attribute table.

Answer 2

cl ending on the table means "chanage log".

Run:

php bin/magento indexer:reindex

And you should be able to see changes in those tables. The above command should hopefully fix the problem with the OOS products.

Have a look at this: Magento 2 Tables Being Created Ending in "_cl"