Re: [Django] #35671: Document how to disallow blank values in Char/TextFields (was: Field.null=False on string-based fields behaves inconsistently with the typical usage of Field.null.)

[Django]

#35671: Document how to disallow blank values in Char/TextFields
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Reporter: Clifford Gama | Owner: (none)
Type: | Status: new
Cleanup/optimization |
Component: Database layer | Version: 5.1
(models, ORM) |
Severity: Normal | Resolution:
Keywords: Field.null; | Triage Stage: Accepted
IntegrityError; |
NotNullConstraint; Field.default |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by Sarah Boyce):

* stage: Unreviewed => Accepted
* summary:
Field.null=False on string-based fields behaves inconsistently with
the typical usage of Field.null.
=> Document how to disallow blank values in Char/TextFields
* type: Bug => Cleanup/optimization

Comment:

I don't think we can change the behavior here as this would be a breaking
change and I think it makes sense that given a field which cannot be null,
but can be a blank string, without a default set, it defaults to a blank
string

But I agree that this is not clear in the docs and we can make an update
there

Note, this is about how given a model:
{{{
class StringModel(Model):
field = models.CharField(blank=False, null=False)
}}}
the value for `StringModel().field` is `""`, which is determined by the
property `Field._get_default`
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Ticket URL: <https://code.djangoproject.com/ticket/35671#comment:2>
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