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Fixed #23617 -- Added get_pk_value_on_save()

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The method is mainly intended for use with UUIDField. For UUIDField we
want to call the field's default even when primary key value is
explicitly set to None to match the behavior of AutoField.

Thanks to Marc Tamlyn and Tim Graham for review.
This commit is contained in:
Anssi Kääriäinen 2015-01-28 13:40:48 +02:00 • committed by Tim Graham
parent 118b11221f
commit 8adc59038c
6 changed files with 50 additions and 0 deletions
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9
docs/ref/models/fields.txt
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@ -217,6 +217,15 @@ Note that ``lambda``\s cannot be used for field options like ``default``
because they cannot be :ref:`serialized by migrations <migration-serializing>`.
See that documentation for other caveats.
The default value is used when new model instances are created and a value
isn't provided for the field. When the field is a primary key, the default is
also used when the field is set to ``None``.
.. versionchanged:: 1.8
The default wasn't used for ``None`` primary key values in previous
versions.
``editable``
------------