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<a href="#django-rest-framework-38">Django REST framework 3.8</a>
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<h1 id="django-rest-framework-38"><a class="toclink" href="#django-rest-framework-38">Django REST framework 3.8</a></h1>
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<p>The 3.8 release is a maintenance focused release resolving a large number of previously outstanding issues and laying
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the foundations for future changes.</p>
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<hr />
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<h2 id="funding"><a class="toclink" href="#funding">Funding</a></h2>
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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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<strong><a href="../funding/">signing up for a paid plan</a></strong>.</p>
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<p><em>We'd like to say thanks in particular 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://machinalis.com/">Machinalis</a>, and <a href="https://rollbar.com">Rollbar</a>.</em></p>
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<hr />
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<h2 id="breaking-changes"><a class="toclink" href="#breaking-changes">Breaking Changes</a></h2>
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<h3 id="altered-the-behaviour-of-read_only-plus-default-on-field"><a class="toclink" href="#altered-the-behaviour-of-read_only-plus-default-on-field">Altered the behaviour of <code>read_only</code> plus <code>default</code> on Field.</a></h3>
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<p><a href="https://github.com/encode/django-rest-framework/issues/5886">#5886</a> <code>read_only</code> fields will now <strong>always</strong> be excluded from writable fields.</p>
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<p>Previously <code>read_only</code> fields when combined with a <code>default</code> value would use the <code>default</code> for create and update
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operations. This was counter-intuitive in some circumstances and led to difficulties supporting dotted <code>source</code>
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attributes on nullable relations.</p>
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<p>In order to maintain the old behaviour you may need to pass the value of <code>read_only</code> fields when calling <code>save()</code> in
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the view:</p>
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<pre><code>def perform_create(self, serializer):
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serializer.save(owner=self.request.user)
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</code></pre>
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<p>Alternatively you may override <code>save()</code> or <code>create()</code> or <code>update()</code> on the serializer as appropriate.</p>
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<hr />
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<h2 id="deprecations"><a class="toclink" href="#deprecations">Deprecations</a></h2>
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<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>
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<p><a href="https://github.com/encode/django-rest-framework/issues/5705">#5705</a> <code>list_route</code> and <code>detail_route</code> have been merge into a single <code>action</code> decorator. This improves viewset action introspection, and will allow extra actions to be displayed in the Browsable API in future versions.</p>
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<p>Both <code>list_route</code> and <code>detail_route</code> are now pending deprecation. They will be deprecated in 3.9 and removed entirely
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in 3.10.</p>
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<p>The new <code>action</code> decorator takes a boolean <code>detail</code> argument.</p>
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<ul>
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<li>Replace <code>detail_route</code> uses with <code>@action(detail=True)</code>.</li>
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<li>Replace <code>list_route</code> uses with <code>@action(detail=False)</code>.</li>
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</ul>
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<h3 id="exclude_from_schema"><a class="toclink" href="#exclude_from_schema"><code>exclude_from_schema</code></a></h3>
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<p>Both <code>APIView.exclude_from_schema</code> and the <code>exclude_from_schema</code> argument to the <code>@api_view</code> decorator are now deprecated. They will be removed entirely in 3.9.</p>
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<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 />
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<h2 id="minor-fixes-and-improvements"><a class="toclink" href="#minor-fixes-and-improvements">Minor fixes and improvements</a></h2>
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<p>There are a large number of minor fixes and improvements in this release. See the <a href="../release-notes/">release notes</a> page
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for a complete listing.</p>
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<h2 id="whats-next"><a class="toclink" href="#whats-next">What's next</a></h2>
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<p>We're currently working towards moving to using <a href="https://www.openapis.org/">OpenAPI</a> as our default schema output. We'll also be revisiting our API documentation generation and client libraries.</p>
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<p>We're doing some consolidation in order to make this happen. It's planned that 3.9 will drop the <code>coreapi</code> and <code>coreschema</code> libraries, and instead use <code>apistar</code> for the API documentation generation, schema generation, and API client libraries.</p>
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