Commit ea7bef31 authored by Jimmy Song's avatar Jimmy Song Committed by Tim Graham
Browse files

[1.6.x] Fixed #20859 - Clarified Model.clean() example. 

Backport of 94d7fed7 from master
parent 06f484dc

AUTHORS

+1 −0
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@@ -540,6 +540,7 @@ answer newbie questions, and generally made Django that much better: 
    smurf@smurf.noris.de

    Vsevolod Solovyov

    George Song <george@damacy.net>

    Jimmy Song <jaejoon@gmail.com>

    sopel

    Leo Soto <leo.soto@gmail.com>

    Wiliam Alves de Souza <wiliamsouza83@gmail.com>

docs/ref/models/instances.txt

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@@ -140,9 +140,13 @@ 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

access to more than a single field::



    def clean(self):

    import datetime

    from django.core.exceptions import ValidationError

    from django.db import models



    class Article(models.Model):

        ...

        def clean(self):

            # Don't allow draft entries to have a pub_date.

            if self.status == 'draft' and self.pub_date is not None:

                raise ValidationError('Draft entries may not have a publication date.')