How can i create Generated/Computed column Postgres/DJANGO?

Question

How can I create Generated/Computed column Postgres/DJANGO?

I tried in both ways:

(1) By a Class:

class Product(models.Model):
    name = models.CharField(max_length=200, null=True)
    precio_costo = models.FloatField(null=True)
    cantidad = models.IntegerField(null=True)
    monto_stock = models.FloatField(
        always_generated='precio_costo * cantidad', stored=True)

ERROR I GET:

TypeError: init() got an unexpected keyword argument 'always_generated'

(2) Directly by POSTGRES Admin

But I can't update or add a new field, Default value is required by Django.

Answer 1

In Django >5.0 you can use GeneratedField.