django-custom-manager – Tarik Billa

Django custom managers – how do I return only objects created by the logged-in user?

August 15, 2023 by Tarik

One way to handle this would be to create a new method instead of redefining get_query_set. Something along the lines of: class UserContactManager(models.Manager): def for_user(self, user): return super(UserContactManager, self).get_query_set().filter(creator=user) class UserContact(models.Model): […] objects = UserContactManager() This allows your view to look like this: contacts = Contact.objects.for_user(request.user) This should help keep your view simple, and because … Read more

Catching DoesNotExist exception in a custom manager in Django

February 1, 2023 by Tarik

Try either using ObjectDoesNotExist instead of DoesNotExist or possibly self.DoesNotExist. If all else fails, just try and catch a vanilla Exception and evaluate it to see it’s type(). from django.core.exceptions import ObjectDoesNotExist

Django dynamic model fields

October 24, 2022 by Tarik

As of today, there are four available approaches, two of them requiring a certain storage backend: Django-eav (the original package is no longer mantained but has some thriving forks) This solution is based on Entity Attribute Value data model, essentially, it uses several tables to store dynamic attributes of objects. Great parts about this solution … Read more