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Fixed #27473 -- Added DurationField support to Extract.

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Daniel Hahler 2016-11-23 16:36:11 +01:00 • committed by Tim Graham
parent 63e9a71ec4
commit 43a4835edf
4 changed files with 59 additions and 11 deletions
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16
docs/ref/models/database-functions.txt
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@ -331,12 +331,16 @@ We'll be using the following model in examples of each function::
Extracts a component of a date as a number.
Takes an ``expression`` representing a ``DateField`` or ``DateTimeField`` and a
``lookup_name``, and returns the part of the date referenced by ``lookup_name``
as an ``IntegerField``. Django usually uses the databases' extract function, so
you may use any ``lookup_name`` that your database supports. A ``tzinfo``
subclass, usually provided by ``pytz``, can be passed to extract a value in a
specific timezone.
Takes an ``expression`` representing a ``DateField``, ``DateTimeField``,
``TimeField``, or ``DurationField`` and a ``lookup_name``, and returns the part
of the date referenced by ``lookup_name`` as an ``IntegerField``.
Django usually uses the databases' extract function, so you may use any
``lookup_name`` that your database supports. A ``tzinfo`` subclass, usually
provided by ``pytz``, can be passed to extract a value in a specific timezone.
.. versionchanged:: 2.0
Support for ``DurationField`` was added.
Given the datetime ``2015-06-15 23:30:01.000321+00:00``, the built-in
``lookup_name``\s return: