Imagine the following model, manager and queryset:

from django.db import models

class BlaQuerySet(models.QuerySet):
    def annotate_field(self):
        return self.annotate(bla_field=Value('Bla')

class BlaManager(models.Manager):
    def get_queryset(self):
        return BlaQuerySet(self.model, using=self._db).annotate_field()

class Bla(models.Model):
    hello = models.CharField(max_length=10)

Now that we have the model. Let’s create something:

bla_instance = Bla.objects.create(hello='something')
bla_instance.bla_field

returns

`AttributeError: ‘Bla’ object has no attribute ‘bla_field’

On the other hand, when you filter that item:

bla_instance = Bla.objects.get(hello='something')
bla_instance.bla_field

returns the expected Bla

How can I force the create() to use my manager instead of the default one?