fix custom pk incompatibility errors

[NwawelAIroume]

66

This commit fixes errors when using Django model with a primary key different from id. I also updated all related queryset filters on the primary key. here is the documentation from Django explaining the compatibility changes https://docs.djangoproject.com/en/4.0/ref/models/instances/#django.db.models.Model.pk

[tOgg1]

Great, thanks!