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[1.9.x] Fixed #26239 -- Added a note about how auto_now works with QuerySet.update().

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Backport of ca5c05ddbe91f4aae38c4543240dbda5f1fb1db2 from master
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Duane Hilton 2016-03-12 09:15:57 -07:00 committed by Tim Graham
parent 16691ed24c
commit 421ad283d3
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docs/ref/models/fields.txt
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@ -490,6 +490,12 @@ optional arguments:
for "last-modified" timestamps. Note that the current date is *always* for "last-modified" timestamps. Note that the current date is *always*
used; it's not just a default value that you can override. used; it's not just a default value that you can override.
The field is only automatically updated when calling :meth:`Model.save()
<django.db.models.Model.save>`. The field isn't updated when making updates
to other fields in other ways such as :meth:`QuerySet.update()
<django.db.models.query.QuerySet.update>`, though you can specify a custom
value for the field in an update like that.
.. attribute:: DateField.auto_now_add .. attribute:: DateField.auto_now_add
Automatically set the field to now when the object is first created. Useful Automatically set the field to now when the object is first created. Useful