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< h1 id = "django-rest-framework-39" > < a class = "toclink" href = "#django-rest-framework-39" > Django REST framework 3.9< / a > < / h1 >
< p > The 3.9 release gives access to < em > extra actions< / em > in the Browsable API, introduces composable permissions and built-in < a href = "https://www.openapis.org/" > OpenAPI< / a > schema support. (Formerly known as Swagger)< / p >
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< p > If you use REST framework commercially and would like to see this work continue, we strongly encourage you to invest in its continued development by
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< p > < em > Many thanks to all our < a href = "https://fund.django-rest-framework.org/topics/funding/#our-sponsors" > wonderful sponsors< / a > , and in particular to our premium backers, < a href = "https://www.rover.com/careers/" > Rover< / a > , < a href = "https://sentry.io/welcome/" > Sentry< / a > , < a href = "https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf" > Stream< / a > , < a href = "https://auklet.io/" > Auklet< / a > , < a href = "https://rollbar.com" > Rollbar< / a > , < a href = "https://cadre.com" > Cadre< / a > , < a href = "https://loadimpact.com/?utm_campaign=Sponsorship%20links&utm_source=drf&utm_medium=drf" > Load Impact< / a > , and < a href = "https://hubs.ly/H0f30Lf0" > Kloudless< / a > .< / em > < / p >
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< hr / >
< h2 id = "built-in-openapi-schema-support" > < a class = "toclink" href = "#built-in-openapi-schema-support" > Built-in OpenAPI schema support< / a > < / h2 >
< p > REST framework now has a first-pass at directly including OpenAPI schema support. (Formerly known as Swagger)< / p >
< p > Specifically:< / p >
< ul >
< li > There are now < code > OpenAPIRenderer< / code > , and < code > JSONOpenAPIRenderer< / code > classes that deal with encoding < code > coreapi.Document< / code > instances into OpenAPI YAML or OpenAPI JSON.< / li >
< li > The < code > get_schema_view(...)< / code > method now defaults to OpenAPI YAML, with CoreJSON as a secondary
option if it is selected via HTTP content negotiation.< / li >
< li > There is a new management command < code > generateschema< / code > , which you can use to dump
the schema into your repository.< / li >
< / ul >
< p > Here's an example of adding an OpenAPI schema to the URL conf:< / p >
< pre > < code class = "python" > from rest_framework.schemas import get_schema_view
from rest_framework.renderers import JSONOpenAPIRenderer
schema_view = get_schema_view(
title='Server Monitoring API',
url='https://www.example.org/api/',
renderer_classes=[JSONOpenAPIRenderer]
)
urlpatterns = [
url('^schema.json$', schema_view),
...
]
< / code > < / pre >
< p > And here's how you can use the < code > generateschema< / code > management command:< / p >
< pre > < code class = "shell" > $ python manage.py generateschema --format openapi > schema.yml
< / code > < / pre >
< p > There's lots of different tooling that you can use for working with OpenAPI
schemas. One option that we're working on is the < a href = "https://docs.apistar.com/" > API Star< / a >
command line tool.< / p >
< p > You can use < code > apistar< / code > to validate your API schema:< / p >
< pre > < code class = "shell" > $ apistar validate --path schema.json --format openapi
✓ Valid OpenAPI schema.
< / code > < / pre >
< p > Or to build API documentation:< / p >
< pre > < code class = "shell" > $ apistar docs --path schema.json --format openapi
✓ Documentation built at " build/index.html" .
< / code > < / pre >
< p > API Star also includes a < a href = "https://docs.apistar.com/client-library/" > dynamic client library< / a >
that uses an API schema to automatically provide a client library interface for making requests.< / p >
< h2 id = "composable-permission-classes" > < a class = "toclink" href = "#composable-permission-classes" > Composable permission classes< / a > < / h2 >
< p > You can now compose permission classes using the and/or operators, < code > & < / code > and < code > |< / code > .< / p >
< p > For example...< / p >
< pre > < code class = "python" > permission_classes = [IsAuthenticated & (ReadOnly | IsAdmin)]
< / code > < / pre >
< p > If you're using custom permission classes then make sure that you are subclassing
from < code > BasePermission< / code > in order to enable this support.< / p >
< h2 id = "viewset-extra-actions-available-in-the-browsable-api" > < a class = "toclink" href = "#viewset-extra-actions-available-in-the-browsable-api" > ViewSet < em > Extra Actions< / em > available in the Browsable API< / a > < / h2 >
< p > Following the introduction of the < code > action< / code > decorator in v3.8, < em > extra actions< / em > defined on a ViewSet are now available
from the Browsable API.< / p >
< p > < img alt = "Extra Actions displayed in the Browsable API" src = "https://user-images.githubusercontent.com/2370209/32976956-1ca9ab7e-cbf1-11e7-981a-a20cb1e83d63.png" / > < / p >
< p > When defined, a dropdown of "Extra Actions", appropriately filtered to detail/non-detail actions, is displayed.< / p >
< hr / >
< h2 id = "supported-versions" > < a class = "toclink" href = "#supported-versions" > Supported Versions< / a > < / h2 >
< p > REST framework 3.9 supports Django versions 1.11, 2.0, and 2.1.< / p >
< hr / >
< h2 id = "deprecations" > < a class = "toclink" href = "#deprecations" > Deprecations< / a > < / h2 >
< h3 id = "djangoobjectpermissionsfilter-moved-to-third-party-package" > < a class = "toclink" href = "#djangoobjectpermissionsfilter-moved-to-third-party-package" > < code > DjangoObjectPermissionsFilter< / code > moved to third-party package.< / a > < / h3 >
< p > The < code > DjangoObjectPermissionsFilter< / code > class is pending deprecation, will be deprecated in 3.10 and removed entirely in 3.11.< / p >
< p > It has been moved to the third-party < a href = "https://github.com/rpkilby/django-rest-framework-guardian" > < code > djangorestframework-guardian< / code > < / a >
package. Please use this instead.< / p >
< h3 id = "router-argumentmethod-renamed-to-use-basename-for-consistency" > < a class = "toclink" href = "#router-argumentmethod-renamed-to-use-basename-for-consistency" > Router argument/method renamed to use < code > basename< / code > for consistency.< / a > < / h3 >
< ul >
< li > The < code > Router.register< / code > < code > base_name< / code > argument has been renamed in favor of < code > basename< / code > .< / li >
< li > The < code > Router.get_default_base_name< / code > method has been renamed in favor of < code > Router.get_default_basename< / code > . < a href = "https://github.com/encode/django-rest-framework/pull/5990" > #5990< / a > < / li >
< / ul >
< p > See < a href = "https://github.com/encode/django-rest-framework/pull/5990" > #5990< / a > .< / p >
< p > < code > base_name< / code > and < code > get_default_base_name()< / code > are pending deprecation. They will be deprecated in 3.10 and removed entirely in 3.11.< / p >
< h3 id = "action-decorator-replaces-list_route-and-detail_route" > < a class = "toclink" href = "#action-decorator-replaces-list_route-and-detail_route" > < code > action< / code > decorator replaces < code > list_route< / code > and < code > detail_route< / code > < / a > < / h3 >
< p > Both < code > list_route< / code > and < code > detail_route< / code > are now deprecated in favour of the single < code > action< / code > decorator.
They will be removed entirely in 3.10.< / p >
< p > The < code > action< / code > decorator takes a boolean < code > detail< / code > argument.< / p >
< ul >
< li > Replace < code > detail_route< / code > uses with < code > @action(detail=True)< / code > .< / li >
< li > Replace < code > list_route< / code > uses with < code > @action(detail=False)< / code > .< / li >
< / ul >
< h3 id = "exclude_from_schema" > < a class = "toclink" href = "#exclude_from_schema" > < code > exclude_from_schema< / code > < / a > < / h3 >
< p > Both < code > APIView.exclude_from_schema< / code > and the < code > exclude_from_schema< / code > argument to the < code > @api_view< / code > have now been removed.< / p >
< p > For < code > APIView< / code > you should instead set a < code > schema = None< / code > attribute on the view class.< / p >
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< p > For function-based views the < code > @schema< / code > decorator can be used to exclude the view from the schema, by using < code > @schema(None)< / code > .< / p >
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< hr / >
< h2 id = "minor-fixes-and-improvements" > < a class = "toclink" href = "#minor-fixes-and-improvements" > Minor fixes and improvements< / a > < / h2 >
< p > There are a large number of minor fixes and improvements in this release. See the < a href = "../release-notes/" > release notes< / a > page for a complete listing.< / p >
< h2 id = "whats-next" > < a class = "toclink" href = "#whats-next" > What's next< / a > < / h2 >
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< p > We're planning to iteratively work towards OpenAPI becoming the standard schema
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representation. This will mean that the < code > coreapi< / code > dependency will gradually become
removed, and we'll instead generate the schema directly, rather than building
a CoreAPI < code > Document< / code > object.< / p >
< p > OpenAPI has clearly become the standard for specifying Web APIs, so there's not
much value any more in our schema-agnostic document model. Making this change
will mean that we'll more easily be able to take advantage of the full set of
OpenAPI functionality.< / p >
< p > This will also make a wider range of tooling available.< / p >
< p > We'll focus on continuing to develop the < a href = "https://docs.apistar.com/" > API Star< / a >
library and client tool into a recommended option for generating API docs,
validating API schemas, and providing a dynamic client library.< / p >
< p > There's also a huge amount of ongoing work on maturing the ASGI landscape,
with the possibility that some of this work will eventually < a href = "https://www.aeracode.org/2018/06/04/django-async-roadmap/" > feed back into
Django< / a > .< / p >
< p > There will be further work on the < a href = "https://www.uvicorn.org/" > Uvicorn< / a >
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web server, as well as lots of functionality planned for the < a href = "https://www.starlette.io/" > Starlette< / a >
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web framework, which is building a foundational set of tooling for working with
ASGI.< / p >
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