Custom attribute not appearing (inconsistent behaviour on two servers)

[torlsoundn]

Hi

I have to servers running the same block code / template, which outputs a custom product attribute. In both admins I see that the attribute has a value (/p/r/something.png)

I use the following code for debugging:

$attrImage = $_product->getData('product_slider_image');
echo 'product_slider_image: ' . $attrImage . '<br/>';

On server 1 I get the data as expected, on server 2 I get an empty string.

Tried clearing both cache and index without any change.

What may cause this?

[torlsoundn]

Both servers run 2.1.8

[torlsoundn]

I even tried adding a new custom attribute. Same issue as above. No value is outputted on one of the servers.

[torlsoundn · Accepted solution]

Ah, found the issue. The issue was that "Use in product listing" was not set for the attribute. But in 2.1.8, there is no way of setting this from the admin for image attributes, since the admin CSS hides the setting. But I remembered I did a fix for this on the other server a few weeks ago.

The "Storefront Properties" tab for the attribute is still in the DOM, so I inspected the element and removed the "display: none" setting. Then I was able to check the "Used in product listing" setting and everything works as expected.