support multi db atomic_requests #7739
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I'm very satisfied with this pull request yup, nicely done. Clear motivation, small footprint, cleanly done code change. |
stefanacin
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sigvef
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Description
When using https://docs.djangoproject.com/en/3.1/ref/settings/#std:setting-DATABASE-ATOMIC_REQUESTS, django wraps each invoked view with transactions to all databases (https://github.com/django/django/blob/master/django/core/handlers/base.py#L323-L330). #2887 resolved #2034 for the default database, only.
In particular, https://github.com/encode/django-rest-framework/blob/master/rest_framework/views.py#L67-103 does not handle the fact that multiple transactions can be created by django. This PR adds a unit test and associated fix to ensure DRF rollsback all transactions setup by django for ATOMIC_REQUESTS rather than just the default db's transaction.
Test Plan
Added unit tests. Fail with the old code, passes with the new code.