Unable to retrieve in models.py

Following the section below on the quickstart page, I’m unable to retrieve a global preference in my models.py. The error I get is this: AttributeError: 'NoneType' object has no attribute 'objects'

https://django-dynamic-preferences.readthedocs.io/en/stable/quickstart.html#retrieve-and-update-preferences

I also tried a different method: models.py

from dynamic_preferences.models import GlobalPreferenceModel

global_preferences = GlobalPreferenceModel.registry.manager()

full_name = global_preferences['Names__full_name']

And I get this error: dynamic_preferences.exceptions.NotFoundInRegistry: No such preference in GlobalPreferenceRegistry with section=Names and name=full_name

When calling this in my views.py it works just fine

full_name = global_preferences['Names__full_name']

So why can’t I get it to work in models.py?

[agateblue]

That’s what I thought. What you hare doing here is accessing preferences directly in the models.py (outside a class or a function). However, preferences are loaded after models (more exactly, when Apps.ready() is called).

As a result, the preference you are accessing is not loaded in the preferences registry yet.

It’s not a dynamic_preferences, it’s just the way django works, by the way: you should never try to query the database directly when a models.py file is imported. Because you cannot use models if they are not configured 😉

If you want to access these preferences, do it in the view, in the template, or even in a model method, anywhere after models have been fully loaded. But not at the root of the file.

[JetUni]

Alright, there you go!