Upgrading to 2.1.7 changed dropdown attributes to swatches

[roseofgold]

Preconditions

1. Magento 2.1.7
2. PHP 7.0.17
3. mySQL 5.6.35-80.0

Steps to reproduce

1. Installed Magento 2.1.2 with custom products
2. Used Web Setup Wizard to Upgrade System to 2.1.7

Expected result

1. Size options show on front end as dropdown list. Code is placed in <div class="field configurable required">
   

Actual result

1. Size options do not show on front end. Code shows as swatch. <div class="swatch-opt" data-role="swatch-options">
   

[korostii]

Whis seems to be a duplicate of #9832.

Please check if you have uses of isProductHasSwatchAttribute in your customized code as per this comment and update those. That should resolve your issue.

[antboiko]

Hi @roseofgold, thank you for your report. We checked the opposite case (swatch attributes being converted to dropdowns) within #9832 and we couldn't reproduce the issue.
Can you please check the suggestion provided by @korostii and let us know if the issue is still reproducible.

[roseofgold]

@korostii it is very similar to #9832. It is the opposite case as @antboiko said.

I have not extended the swatches module. I have checked the vendor files (vendor/magento/module-swatches/Block/Product/Renderer/) and the getRendererTemplate fuction does have $this->isProductHasSwatchAttribute() in it.

Is there somewhere else I should check? Novice Magento coder here

[korostii]

I'd start in app folder if you have any local customizations and also I would check all of 3-rd party modules\themes you happen to have.

vendor/magento folder is expected to be okay, in this case it's probably your other code that got outdated and needs to be adjusted.

Any chance you could find amore experienced colleague to lend you a hand and help you find the issue?
Magento StackExchange might also be helpful in such cases (if you're able\allowed to disclose the source code).

[roseofgold]

I will see if I can find some help on StackExchange or through my PHP groups.

[roseofgold]

I have searched through my files. The only place that isProdustHasSwatchAttribute or getRendererTemplate shows up is in the vendor files.

[korostii]

Ok, so. I had this reproduced on 2.1.7 CE.

Steps to reproduce: save the configurable attribute with frontend input "Text Swatch", then switch back to dropdown and save again.
Actual result: select won't appear on the product page anymore (only the label shows up).

In contrast, an attribute created before upgrade from 2.1.5 to 2.1.7 shows up okay.

Additional considerations: As far as I can tell the issue is introduced in 2.1.6 and remains in 2.1.7
It seems that the check performed by the isProductHasSwatchAttribute() method depends on whether
the attribute has corresponding entries in eav_attribute_option_swatch table.
Apparently, those records don't get flushed when you switch the frontend_input type to "dropdown". Cleaning them up manually seems to fix the attribute and the dropdown appears as expected.

"Well-tested, backwards-compatible, non-breaking patch releases." Yeah, right.

[roseofgold]

@korostii Thank you for tracking that down. However that still didn't work for me. I did have NULL entries for the attribute in that table. I deleted those line, flushed cache and it still doesn't show up. Is there another table that I should be looking in as well?

I'm about ready to recreate the option to not have to deal with it anymore. Thankfully this is an option for me at this time.

[korostii]

Is there another table that I should be looking in as well?

Not that I know of, unfortunately. Flushing eav_attribute_option_swatch entries corresponding to the attribute (all of them, not just specific to single product or option) worked for me.
Hope you're able to resolve your issue, good luck with your findings!

P.S. I wish the Magento guys would be able to catch this before the release. I think some thorough code review might've spotted this bug.

[koenner01]

Why is this issue marked as 'needs update'. This is clearly still an open issue and has been described perfectly to standards