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159 lines
6.4 KiB
Markdown
159 lines
6.4 KiB
Markdown
# REST framework 2.4 announcement
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The 2.4 release is largely an intermediate step, tying up some outstanding issues prior to the 3.x series.
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## Version requirements
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Support for Django 1.3 has been dropped.
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The lowest supported version of Django is now 1.4.2.
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The current plan is for REST framework to remain in lockstep with [Django's long-term support policy][lts-releases].
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## Django 1.7 support
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The optional authtoken application now includes support for *both* Django 1.7 schema migrations, *and* for old-style `south` migrations.
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**If you are using authtoken, and you want to continue using `south`, you must upgrade your `south` package to version 1.0.**
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## Updated test runner
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We now have a new test runner for developing against the project,, that uses the excellent [py.test](http://pytest.org) library.
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To use it make sure you have first installed the test requirements.
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pip install -r requirements-test.txt
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Then run the `runtests.py` script.
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./runtests.py
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The new test runner also includes [flake8](https://flake8.readthedocs.org) code linting, which should help keep our coding style consistent.
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#### Test runner flags
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Run using a more concise output style.
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./runtests -q
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Run the tests using a more concise output style, no coverage, no flake8.
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./runtests --fast
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Don't run the flake8 code linting.
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./runtests --nolint
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Only run the flake8 code linting, don't run the tests.
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./runtests --lintonly
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Run the tests for a given test case.
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./runtests MyTestCase
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Run the tests for a given test method.
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./runtests MyTestCase.test_this_method
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Shorter form to run the tests for a given test method.
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./runtests test_this_method
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Note: The test case and test method matching is fuzzy and will sometimes run other tests that contain a partial string match to the given command line input.
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## Improved viewset routing
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The `@action` and `@link` decorators were inflexible in that they only allowed additional routes to be added against instance style URLs, not against list style URLs.
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The `@action` and `@link` decorators have now been moved to pending deprecation, and the `@list_route` and `@detail_route` decorators have been introduced.
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Here's an example of using the new decorators. Firstly we have a detail-type route named "set_password" that acts on a single instance, and takes a `pk` argument in the URL. Secondly we have a list-type route named "recent_users" that acts on a queryset, and does not take any arguments in the URL.
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class UserViewSet(viewsets.ModelViewSet):
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"""
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A viewset that provides the standard actions
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"""
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queryset = User.objects.all()
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serializer_class = UserSerializer
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@detail_route(methods=['post'])
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def set_password(self, request, pk=None):
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user = self.get_object()
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serializer = PasswordSerializer(data=request.DATA)
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if serializer.is_valid():
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user.set_password(serializer.data['password'])
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user.save()
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return Response({'status': 'password set'})
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else:
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return Response(serializer.errors,
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status=status.HTTP_400_BAD_REQUEST)
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@list_route()
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def recent_users(self, request):
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recent_users = User.objects.all().order('-last_login')
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page = self.paginate_queryset(recent_users)
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serializer = self.get_pagination_serializer(page)
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return Response(serializer.data)
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For more details, see the [viewsets documentation](../api-guide/viewsets.md).
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## Throttle behavior
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There's one bugfix in 2.4 that's worth calling out, as it will *invalidate existing throttle caches* when you upgrade.
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We've now fixed a typo on the `cache_format` attribute. Previously this was named `"throtte_%(scope)s_%(ident)s"`, it is now `"throttle_%(scope)s_%(ident)s"`.
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If you're concerned about the invalidation you have two options.
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* Manually pre-populate your cache with the fixed version.
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* Set the `cache_format` attribute on your throttle class in order to retain the previous incorrect spelling.
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## Other features
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There are also a number of other features and bugfixes as [listed in the release notes][2-4-release-notes]. In particular these include:
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[Customizable view name and description functions][view-name-and-description-settings] for use with the browsable API, by using the `VIEW_NAME_FUNCTION` and `VIEW_DESCRIPTION_FUNCTION` settings.
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Smarter [client IP identification for throttling][client-ip-identification], with the addition of the `NUM_PROXIES` setting.
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## Deprecations
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All API changes in 2.3 that previously raised `PendingDeprecationWarning` will now raise a `DeprecationWarning`, which is loud by default.
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All API changes in 2.3 that previously raised `DeprecationWarning` have now been removed entirely.
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Furter details on these deprecations is available in the [2.3 announcement][2-3-announcement].
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## Labels and milestones
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Although not strictly part of the 2.4 release it's also worth noting here that we've been working hard towards improving our triage process.
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The [labels that we use in GitHub][github-labels] have been cleaned up, and all existing tickets triaged. Any given ticket should have one and only one label, indicating its current state.
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We've also [started using milestones][github-milestones] in order to track tickets against particular releases.
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---
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**Above**: *Overview of our current use of labels and milestones in GitHub.*
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---
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We hope both of these changes will help make the management process more clear and obvious and help keep tickets well-organised and relevant.
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## Next steps
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The next planned release will be 3.0, featuring an improved and simplified serializer implementation.
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Once again, many thanks to all the generous [backers and sponsors][kickstarter-sponsors] who've helped make this possible!
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[lts-releases]: https://docs.djangoproject.com/en/dev/internals/release-process/#long-term-support-lts-releases
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[2-4-release-notes]: ./topics/release-notes/#240
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[view-name-and-description-settings]: ../api-guide/settings/#view-names-and-descriptions
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[client-ip-identification]: ../api-guide/throttling/#how-clients-are-identified
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[2-3-announcement]: ./topics/2.3-announcement
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[github-labels]: https://github.com/tomchristie/django-rest-framework/issues
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[github-milestones]: https://github.com/tomchristie/django-rest-framework/milestones
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[kickstarter-sponsors]: ./topics/kickstarter-announcement/#sponsors
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