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Code Issues 30 Releases Wiki Activity

Fixed #20859 - Clarified Model.clean() example.

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Jimmy Song 2013-08-04 19:40:16 +00:00 committed by Tim Graham
parent 26c4bd38ac
commit 94d7fed775
2 changed files with 14 additions and 9 deletions
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AUTHORS
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@ -543,6 +543,7 @@ answer newbie questions, and generally made Django that much better:
smurf@smurf.noris.de smurf@smurf.noris.de
Vsevolod Solovyov Vsevolod Solovyov
George Song <george@damacy.net> George Song <george@damacy.net>
Jimmy Song <jaejoon@gmail.com>
sopel sopel
Leo Soto <leo.soto@gmail.com> Leo Soto <leo.soto@gmail.com>
Thomas Sorrel Thomas Sorrel

22
docs/ref/models/instances.txt
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@ -140,15 +140,19 @@ attributes on your model if desired. For instance, you could use it to
automatically provide a value for a field, or to do validation that requires automatically provide a value for a field, or to do validation that requires
access to more than a single field:: access to more than a single field::
def clean(self): import datetime
import datetime from django.core.exceptions import ValidationError
from django.core.exceptions import ValidationError from django.db import models
# Don't allow draft entries to have a pub_date.
if self.status == 'draft' and self.pub_date is not None: class Article(models.Model):
raise ValidationError('Draft entries may not have a publication date.') ...
# Set the pub_date for published items if it hasn't been set already. def clean(self):
if self.status == 'published' and self.pub_date is None: # Don't allow draft entries to have a pub_date.
self.pub_date = datetime.date.today() if self.status == 'draft' and self.pub_date is not None:
raise ValidationError('Draft entries may not have a publication date.')
# Set the pub_date for published items if it hasn't been set already.
if self.status == 'published' and self.pub_date is None:
self.pub_date = datetime.date.today()
Any :exc:`~django.core.exceptions.ValidationError` exceptions raised by Any :exc:`~django.core.exceptions.ValidationError` exceptions raised by
``Model.clean()`` will be stored in a special key error dictionary key, ``Model.clean()`` will be stored in a special key error dictionary key,