#9459: forms.DateTimeField() rendered with HiddenInput looses microseconds
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Reporter: guettli | Owner: nobody
Status: new | Milestone:
Component: Forms | Version: 1.0
Resolution: | Keywords:
Stage: Accepted | Has_patch: 1
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 1 |
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Changes (by russellm):
* needs_better_patch: 0 => 1
* milestone: 1.1 =>
Comment:
The proposed patch is extremely brittle - it only works providing you
don't use a '.' in the your custom rendering of datetime. If you allow an
input format of '%Y.%m.%d %H:%M:%S", the code will break hard.
If you dig into the code, it isn't just HiddenField that is affected by
this - the default DateTimeField also loses milliseconds. Essentially,
what is required is a way to parse milliseconds from a string. Python 2.6
adds %f to strftime/strptime, which will solve this problem - you can then
allow "%Y-%m-%d %H:%M:%S.%f" as an input format. We may need to port
strftime and strptime back from Python 2.6. Other options also welcome.
This problem:
1. Is Annoying
2. Has always existed in newforms, and probably in oldforms before that
3. Only affects a subset of the user community
Since the required fix will be quite big, and we're already overdue for
v1.1, I'm going to drop this from the v1.1 roadmap. If someone wants to
tackle porting strptime and strftime (and this includes resolving any
licensing issues) and they can get a patch ready quickly, feel free to put
this back on the v1.1 path.
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Ticket URL: <http://code.djangoproject.com/ticket/9459#comment:4>
Django <http://code.djangoproject.com/>
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