Opened 8 years ago
Last modified 7 years ago
#28219 new Cleanup/optimization
Ease locating origin of queryset paginator warnings
Reported by: | Denise Mauldin | Owned by: | nobody |
---|---|---|---|
Component: | Core (Other) | Version: | 1.11 |
Severity: | Normal | Keywords: | |
Cc: | Triage Stage: | Accepted | |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description
I just updated from 1.10 to 1.11 and I get a ton of these UnorderedObjectListWarnings when running my tests. However, I have no idea where they're coming from, so I'm going through and searching for filter
in my codebase and adding an order_by
on the end of it. This is a quite annoying process and would be helped if the warning returned a stack trace of where it was being called from.
Change History (7)
follow-up: 2 comment:1 by , 8 years ago
comment:2 by , 8 years ago
Hi Simon,
I'm not sure what to do. If I edit django/core/paginator.py to do a traceback.print_stack() call before the warning is called, then I get something really long that doesn't include any of my code other than the API call:
File "manage.py", line 23, in <module> execute_from_command_line(sys.argv) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line utility.execute() File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/__init__.py", line 355, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/commands/test.py", line 29, in run_from_argv super(Command, self).run_from_argv(argv) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/base.py", line 283, in run_from_argv self.execute(*args, **cmd_options) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/base.py", line 330, in execute output = self.handle(*args, **options) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/management/commands/test.py", line 62, in handle failures = test_runner.run_tests(test_labels) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/runner.py", line 603, in run_tests result = self.run_suite(suite) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/runner.py", line 567, in run_suite return runner.run(suite) File "/usr/local/python/3.5.1/lib/python3.5/unittest/runner.py", line 176, in run test(result) File "/usr/local/python/3.5.1/lib/python3.5/unittest/suite.py", line 84, in __call__ return self.run(*args, **kwds) File "/usr/local/python/3.5.1/lib/python3.5/unittest/suite.py", line 122, in run test(result) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/testcases.py", line 213, in __call__ super(SimpleTestCase, self).__call__(result) File "/usr/local/python/3.5.1/lib/python3.5/unittest/case.py", line 648, in __call__ return self.run(*args, **kwds) File "/usr/local/python/3.5.1/lib/python3.5/unittest/case.py", line 600, in run testMethod() File "/var/www/ann/ann/orders/tests/test_api.py", line 58, in test_order_list_denied response = self.client.get('/api/orders/') File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/test.py", line 282, in get response = super(APIClient, self).get(path, data=data, **extra) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/test.py", line 208, in get return self.generic('GET', path, **r) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/client.py", line 416, in generic return self.request(**r) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/test.py", line 279, in request return super(APIClient, self).request(**kwargs) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/test.py", line 231, in request request = super(APIRequestFactory, self).request(**kwargs) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/client.py", line 483, in request response = self.handler(environ) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/test/client.py", line 144, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/test.py", line 251, in get_response return super(ForceAuthClientHandler, self).get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/base.py", line 124, in get_response response = self._middleware_chain(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/var/www/ann/ann/common/middleware.py", line 33, in __call__ return self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/utils/deprecation.py", line 140, in __call__ response = self.get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner response = get_response(request) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/local/python/3.5.1/lib/python3.5/contextlib.py", line 30, in inner return func(*args, **kwds) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view return view_func(*args, **kwargs) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/viewsets.py", line 86, in view return self.dispatch(request, *args, **kwargs) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/views.py", line 486, in dispatch response = handler(request, *args, **kwargs) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/mixins.py", line 42, in list page = self.paginate_queryset(queryset) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/generics.py", line 173, in paginate_queryset return self.paginator.paginate_queryset(queryset, self.request, view=self) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/rest_framework/pagination.py", line 208, in paginate_queryset paginator = self.django_paginator_class(queryset, page_size) File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/paginator.py", line 32, in __init__ self._check_object_list_is_ordered() File "/home/vagrant/.virtualenvs/ann/lib/python3.5/site-packages/django/core/paginator.py", line 110, in _check_object_list_is_ordered traceback.print_stack()
So I'm not sure why this warning is being triggered. I set Meta: ordering defaults on all of my models and apiviews. What else am I missing?
Maybe I should report this on rest_framework's bug tracker?
follow-up: 4 comment:3 by , 8 years ago
I'm pretty sure this is caused by your Order
model's queryset not being ordered but it's hard to tell without your model and DRF view definitions. In all cases there's not much Django can do to solve your specific DRF issue. It should make sure the queryset passed to paginator is ordered and decide what to do from there.
For the record, the catch_warnings()
method I suggested in my previous comment about rewarning won't work as it's not threadsafe.
comment:4 by , 8 years ago
Replying to Simon Charette:
I'm pretty sure this is caused by your
Order
model's queryset not being ordered but it's hard to tell without your model and DRF view definitions. In all cases there's not much Django can do to solve your specific DRF issue. It should make sure the queryset passed to paginator is ordered and decide what to do from there.
For the record, the
catch_warnings()
method I suggested in my previous comment about rewarning won't work as it's not threadsafe.
Yeah, but when there's 50 Order
model tests and 2 of them throw this error, then it's hard to tell what's causing them when the stacktrace just points to paginator. Someone on SO did suggest that I run the tests on verbose mode (-v2), so that did help pinpoint which test was throwing the error. However, it'd be nice if the UnorderedObject warning would have an option to throw the full traceback so I could tell that it was line 58 in my test_api.py. Maybe that's not possible?
comment:5 by , 7 years ago
Component: | Uncategorized → Core (Other) |
---|---|
Summary: | Paginator warning about unordered object should include stack trace → Ease locating origin of queryset paginator warnings |
Triage Stage: | Unreviewed → Accepted |
Type: | Uncategorized → Cleanup/optimization |
Tentatively accepting for further investigation, even though it's unclear if a solution is feasible.
comment:6 by , 7 years ago
However, it'd be nice if the UnorderedObject warning would have an option to throw the full traceback so I could tell that it was line 58 in my test_api.py. Maybe that's not possible?
Did you try running your test suite with python -W error
? You could use warnings.simplefilter
to only error in the UnorderedObjectListWarning
case
import warnings from django.core.paginator import UnorderedObjectListWarning warnings.simplefilter('error', UnorderedObjectListWarning)
Hi Denise, thank you for your report.
The
stacklevel
of theUnorderedObjectListWarning
warning was adjusted to try to point at the right place in #28109 (shipped in 1.11.1) but it only accounts for directPaginator
manipulation. If you useListView
orModelAdmin
pagination features, which rely onPaginator
internally, it's possible the warning is not pointing at the right user code location.I'm afraid this will this be hard to solve without either adjusting all internal usages of
Paginator
to captureUnorderedObjectListWarning
warnings and rewarn with astacklevel
matching the first possible user entry point but it sounds like a lost cause given the dynamic nature of queryset definition and generation.For example
Maybe adjusting
ListView.paginate_queryset()
andModelAdmin. get_paginator()
to rewarn with a message mentioningself.__class__.qualname__
would be enough?