GridRowPlugin: Columns per Row are not saved

[krmax44]

Describe the bug
The Colums per Row (in Responsive Settings) of the Grid Row plugin are not being saved.

To Reproduce
Steps to reproduce the behavior:

1. Create or edit a Row plugin.
2. Set "Columns per Row" → "Extra small" to 1, and "Small" to 2.
3. Save the plugin.
4. Edit the plugin. The previously set values are empty, no classes are being applied.

Expected behavior
The values should be saved and the proper classes applied.

Screenshots

Before saving	After saving

Desktop (please complete the following information):

• OS: MacOS
• Browser: latest Firefox
• Version: 2.1.2

Additional context
We're using Bootstrap 5. It might be a problem with the form. Plugins created with an earlier version of djangocms-frontend still work, but the values are also displayed empty in the form.

[fsbraun]

@krmax44 Thanks for reporting this! Can you point to a version where this works for you?

[mrbazzan]

I can confirm that this works in 1.3.4 and 1.3.5.
It stopped working in 2.0.0a1

[fsbraun]

Well done, @mrbazzan ! I think this boils it down to

djangocms-frontend/djangocms_frontend/contrib/grid/forms.py

Line 130 in aab21cf

GridRowBaseForm.Meta.entangled_fields["config"] += extra_fields_column.keys()

Can you try replacing it by

GridRowBaseForm._meta.entangled_fields["config"] += extra_fields_column.keys()

It seems a refactoring was not universally applied.

We would also need tests for those fields in tests.grid.test_forms (does not exists, yet) where a form submit is simulated and checked if the data arrives.

[fsbraun]

@krmax44 Great catch!