model field not null

Hello,

While setting up a new model I'm trying to have a strong data model.

One of the requirements is that a certain field cannot be null.

lastname = models.CharField(
blank=False,
default=None,
..)

I'm accomplishing this by the above code. This ensure that even on a database level lastname will not be NULL, by setting default to None.

I'm aware that I can just use blank=False to ensure that on a form level it will never be allowed to be empty. But I want a strong, fully tested, business model from the beginning.

As this is a CharField, according to the docs, I cannot use null=True since empty string will get stored as empty strings and not as NULL.

Is this an appropriate way of modeling my models, or are there other solutions ?

Regards,

Jonas.


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