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Code Issues 25 Releases Wiki Activity

Improved docs for timezone handling for auto_now and auto_now_add

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Thanks djbug for the report and Aymeric Augustin and Carl Meyer for the
review.
This commit is contained in:
Christopher Luc 2015-03-21 17:45:42 -07:00 committed by Markus Holtermann
parent 75430be86f
commit 8119876d4a
2 changed files with 11 additions and 2 deletions
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9
docs/ref/models/fields.txt
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@ -505,6 +505,15 @@ Any combination of these options will result in an error.
``True`` will cause the field to have ``editable=False`` and ``blank=True`` ``True`` will cause the field to have ``editable=False`` and ``blank=True``
set. set.
.. note::
The ``auto_now`` and ``auto_now_add`` options will always use the date in
the :ref:`default timezone <default-current-time-zone>` at the moment of
creation or update. If you need something different, you may want to
consider simply using your own callable default or overriding ``save()``
instead of using ``auto_now`` or ``auto_now_add``; or using a
``DateTimeField`` instead of a ``DateField`` and deciding how to handle the
conversion from datetime to date at display time.
``DateTimeField`` ``DateTimeField``
----------------- -----------------

4
docs/topics/i18n/timezones.txt
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@ -9,13 +9,13 @@ Time zones
Overview Overview
======== ========
When support for time zones is enabled, Django stores date and time When support for time zones is enabled, Django stores datetime
information in UTC in the database, uses time-zone-aware datetime objects information in UTC in the database, uses time-zone-aware datetime objects
internally, and translates them to the end user's time zone in templates and internally, and translates them to the end user's time zone in templates and
forms. forms.
This is handy if your users live in more than one time zone and you want to This is handy if your users live in more than one time zone and you want to
display date and time information according to each user's wall clock. display datetime information according to each user's wall clock.
Even if your Web site is available in only one time zone, it's still good Even if your Web site is available in only one time zone, it's still good
practice to store data in UTC in your database. One main reason is Daylight practice to store data in UTC in your database. One main reason is Daylight