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Add release notes for #5888

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Carlton Gibson 2018-03-20 21:23:17 +01:00
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docs/topics/release-notes.md
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@ -56,6 +56,26 @@ You can determine your currently installed version using `pip show`:
serializer.save(owner=self.request.user) serializer.save(owner=self.request.user)
Alternatively you may override `save()` or `create()` or `update()` on the serialiser as appropriate. Alternatively you may override `save()` or `create()` or `update()` on the serialiser as appropriate.
* Correct allow_null behaviour when required=False [#5888][gh5888]
Without an explicit `default`, `allow_null` implies a default of `null` for outgoing serialisation. Previously such
fields were being skipped when read-only or otherwise not required.
**Possible backwards compatibility break** if you were relying on such fields being excluded from the outgoing
representation. In order to restore the old behaviour you can override `data` to exclude the field when `None`.
For example:
@property
def data(self):
"""
Drop `maybe_none` field if None.
"""
data = super().data()
if 'maybe_none' in data and data['maybe_none'] is None:
del data['maybe_none']
return data
* Refactor dynamic route generation and improve viewset action introspectibility. [#5705][gh5705] * Refactor dynamic route generation and improve viewset action introspectibility. [#5705][gh5705]
`ViewSet`s have been provided with new attributes and methods that allow `ViewSet`s have been provided with new attributes and methods that allow
@ -1820,6 +1840,7 @@ For older release notes, [please see the version 2.x documentation][old-release-
<!-- 3.8.0 --> <!-- 3.8.0 -->
[gh5886]: https://github.com/encode/django-rest-framework/issues/5886 [gh5886]: https://github.com/encode/django-rest-framework/issues/5886
[gh5888]: https://github.com/encode/django-rest-framework/issues/5888
[gh5705]: https://github.com/encode/django-rest-framework/issues/5705 [gh5705]: https://github.com/encode/django-rest-framework/issues/5705
[gh5796]: https://github.com/encode/django-rest-framework/issues/5796 [gh5796]: https://github.com/encode/django-rest-framework/issues/5796
[gh5763]: https://github.com/encode/django-rest-framework/issues/5763 [gh5763]: https://github.com/encode/django-rest-framework/issues/5763