Fix TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in Language Drop down Block class

The last submitted patch, 4: 3348277-4.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

Having issues with
Hide if only one language is available

If only a single language is available, go ahead and hide the block

Maybe related to changes after the fix for
Drupal core - Moderately critical - Information disclosure - SA-CORE-2023-003 →

The language module provides a Language switcher block which can be placed to provide links to quickly switch between different languages.
The URL of unpublished translations may be disclosed. When used in conjunction with a module like Pathauto, this may reveal the title of unpublished content.

The block will not show up in many pages.

In Drupal core Language Block
$links = $this->languageManager->getLanguageSwitchLinks($type, Url::fromRouteMatch(\Drupal::routeMatch()));

https://git.drupalcode.org/project/drupal/-/commit/18bce0cd518975407921b...

Attached a patch fix for the 8.x-2.0 released tag

+1 for the patch in #16, thanks!

Patch fails to apply on Drupal 9.5 and module version 8.x-2.x

error: patch failed: src/Plugin/Block/LanguageDropdownBlock.php:714

I personally experienced this error with only logged-in users. The root cause is the change record mentioned at https://www.drupal.org/node/3247792 → . To resolve this issue, one possible solution is to cast the <?php array_keys((array)$languages->links) ?> to an array.

• Patch #12 is for the development branch 8.x-2.x
• Patch #16 is for the latest release tag 8.x-2.0

Hello, after applying patch 16, I solved the error "TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in Language Drop down Block class" the problem that now gives me another error new. The error occurs because you are trying to count a null variable. Line 239 web/modules/contrib/dropdown_language/src/Plugin/Block/DropdownLanguage.php

Do I have to make a new patch?

Greetings and thank you

Thanks for the quick fix Rajab!

@menu2crak

No, you do not have to make a new patch. The patch is already there and committed. Regarding contributing to Drupal you can go through the documents

https://www.drupal.org/community/contributor-guide/contribution-areas →
https://www.drupal.org/docs/develop/git/using-git-to-contribute-to-drupa... →

Automatically closed - issue fixed for 2 weeks with no activity.

Is there any plan to issue a new module version with this patch included?

Thanks Rajab for your patch

Confirming patch #16 🐛 Fix TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in Language Drop down Block class Fixed worked for 8.x-2.0 → on Drupal 9.5.8 and PHP 8.1.
Thanks @rajab-natshah !

When do you expect to release a new module version correcting this error?

Hello.
thanks for your answer @Rajab Natshah. I had this problem in Drupal version 9.5.5 and your solution solved the problem.
Now I'm using Drupal version 9.5.9, after updating to version 9.5.8 and 9.5.9 I get the following error when selecting the language in the LanguageDropdown:

The website encountered an unexpected error. Please try again later.
Error: Call to a member function all() on null in Drupal\lang_dropdown\Form\LanguageDropdownForm->submitForm() (line 347 of /var/www/html/drupal/modules/lang_dropdown/src/Form/LanguageDropdownForm.php)

Agreed with above posters. This issue isn't really fixed until there is an actual release of the module with patch #16 🐛 Fix TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in Language Drop down Block class Fixed included.

✅ Released lang_dropdown-8.x-2.1 →