#24281: auto_now & auto_now_add ignore TIME_ZONE / USE_TZ settings for DateField
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Reporter: djbug | Owner: nobody
Type: Bug | Status: new
Component: | Version: master
Internationalization |
Severity: Normal | Resolution:
Keywords: timezone | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by carljm):
Replying to [comment:5 aaugustin]:
> That said, until now `DateField` was safe from timezone-related issues.
With that change, saving an object with `auto_now` or `auto_now_add`
during the autumn DST change will raise an exception, because the datetime
is ambiguous, even though the date isn't ambiguous.
Of course, because we know that the date is not in fact ambiguous during a
transition regardless of whether you force DST or no-DST, I think this
would be a case where it would be safe to simply pass `is_dst=False` to
the conversion and avoid the risk of exception.
> My inclination would be to document the current behavior, in order to
avoid a backwards-incompatible change, and recommend using
[https://docs.djangoproject.com/en/1.7/ref/models/fields/#default
Field.default] instead.
But I am OK with this solution. If you actually care about timezones, I
think you are probably better off in control of an explicit default.
--
Ticket URL: <https://code.djangoproject.com/ticket/24281#comment:7>
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