In the `to_internal_value` method of the primary key and slug related fields, `TypeError`s and `ValueError`s are caught from `self.get_queryset().get(...)` and presented to the user. This works fine for most cases, but can cause problems if the exception is coming from `self.get_queryset()` rather than from the `.get(...)`.
It means errors in the `get_queryset` method can be hidden and presented back to the user as though, for example, the input provided to the `to_internal_value` was the wrong type, whereas in reality there's a bug in the `get_queryset` method and therefore it should bubble up and be exposed as a server error.
I've decided to fix this because twice now I've had to debug why I'm seeing `invalid_type` errors from my serializer (errors like `wrong pk type - int` when the `pk` type on my model is `int`) when the real problem was a bug in my custom `get_queryset` method.
Erroring on deprecation or pending deprecation warnings means they are caught early. This will avoid the cycle of releasing with 'support for Django X', then chasing all the deprecation warnings one-by-one. Instead, when a new Django version is added to the test matrix, it will fail until all the relevant warnings are fixed. This avoids passing these warnings on to users, some of whom don't upgrade until they are all fixed.
The test suite raises warnings when tested against Python 3.9
`DeprecationWarning: NotImplemented should not be used in a boolean context`
Where `r` returns `NotImplemented` then this change returns `NotImplemented` first to avoid the comparison test.
Fixes#7417.
Fixes all these issues seen with `tox -e py38-django31`:
```
/Users/chainz/Documents/Projects/django-rest-framework/tests/test_request.py:208: RemovedInDjango40Warning: Passing None for the middleware get_response argument is deprecated.
SessionMiddleware().process_request(self.wrapped_request)
tests/test_requests_client.py: 1 test with warning
tests/test_testing.py: 4 tests with warnings
tests/test_throttling.py: 1 test with warning
tests/authentication/test_authentication.py: 4 tests with warnings
tests/browsable_api/test_browsable_api.py: 4 tests with warnings
/Users/chainz/Documents/Projects/django-rest-framework/rest_framework/authentication.py:139: RemovedInDjango40Warning: Passing None for the middleware get_response argument is deprecated.
check = CSRFCheck()
```
* Add drf-psq to third party packages
* Add drf-psq to permissions.md
this package is an extension that gives support for having action-based **permission_classes**, **serializer_class**, and **queryset** dependent on permission-based rules.
Co-authored-by: Salar Nasiri <salarnasiri@users.noreply.github.com>
* url() is deprecated in Django 3.1
* update given feedbacks on url() is deprecated in Django 3.1
* Fix test_urlpatterns.py to continue testing mixed re_path() and path()
* Fix one missed reference
Co-authored-by: sanjusci <sanju.sci9@gmail.com>
