Following the Frobshop docs, I installed django-oscar v3.0.0, which pulled in django v3.1.6.
Every time I run manage.py I get this warning:
WARNINGS: catalogue.ProductAttributeValue.value_boolean: (fields.W903) NullBooleanField is deprecated. Support for it (except in historical migrations) will be removed in Django 4.0. HINT: Use BooleanField(null=True) instead.
I grepped for NullBooleanField in the Frobshop source, but there were no results. Is there a way to either fix the problem or suppress the message?
Search your Python environment folder where pip would have installed django-oscar, from there you need to find inside your environment this folder below:
.../lib/site-packages/oscar/apps/catalogue/abstract_model.py
In abstract_model.py, change line 1043 from:
value_boolean = models.NullBooleanField(_('Boolean'), blank=True, db_index=True)
to
value_boolean = models.BooleanField(_('Boolean'), blank=True, db_index=True)
You should see the warning disappear after you save the change.