wagtail_transfer_wagtail_hooks.py uses deprecated classnames when registering an admin menu item

[Malia Havlicek]

Issue Summary

I am in the process of upgrading a project to wagtail 5.2 and updated all custom menu items in my project from classnames= to classname= but am still seeing the deprecation warning:

RemovedInWagtail60Warning: The `classnames` kwarg for MenuItem is deprecated - use `classname` instead.

Relevant Information

I have wagtail-transfer=0.9.2 installed, and when I put a breakpoint on the warning, I can see it traces back to wagtail-transfer:

I believe if you change Line 30 of /wagtail_transfer/wagtail_hooks.py to use classname the deprecation warning will go away.

Technical details

• Python version: 3.11.1.
• Django version: 4.1.13
• Wagtail version: 5.2
• Wagtail Transfer version: 0.9.2
• Browser version: Chrome 119

[Matt Westcott]

Thanks for the report! There's already a PR addressing this - #157

[Matt Westcott]

Completed in #157 and released as 0.9.3.