Docs: LazyObject for storages with override_settings does not behave as described

[Dennis Brinkman]

Dear Django Team,

While working on my own Django project using storages, I found an error in the [Managing Files - Using a callable](​https://docs.djangoproject.com/en/5.2/topics/files/#using-a-callable) documentation (the last two code blocks to be precise). As it turns out, the solution of using the override_settings decorator does not work as advertised while testing FileFields.

I have made a minimal Django project (​https://github.com/Brinky5678/django_incorrect_docs_demo) for easy replication. In the readme, I have included steps to how to replicate, as well as the cause of why I think it does not work as expected.

This ticket is not meant to provide a workable solution using the override_settings decorator. Instead, I merely wish to have the documentation updated in such a way that the warning of the storage callables being evaluated during model loading remains, but without the incorrect documentation about using LazyObjects.

[Clifford Gama]

Thanks for the report and the test project. I confirmed using the test project that the documented example doesn't work. For reference, the section was added by #36269.

[khosro_o]

I'm working on this ticket.