There were a couple of regressions related to field pickling. The
regressions were introduced by QuerySet._known_related_objects caching.
The regressions aren't present in master, the fix was likely in
f403653cf1.
Fixed#20157, fixed#20257. Also made QuerySets with model=None
picklable.
A regression caused by d5b93d3281 made .get() error
reporting recurse infinitely on certain rare conditions. Fixed this by
not trying to print the given lookup kwargs.
Backpatch of 266c0bb23e
Handle the `UnicodeDecodeError` exception, send a warning to `stdout` with the
file name and location, and continue processing other files.
Backport of 99a6f0e77 from master.
This reverts commit d1e87eb3ba.
This commit was the cause of a memory leak. See ticket for more details.
Thanks Anssi Kääriäinen for identifying the source of the bug.
Classes overriding __eq__ need a __hash__ such that equal objects have
the same hash.
Thanks akaariai for the report and regebro for the patch.
Backport of e76147a from master.
Backport of 6b03179e12 from master.
Although we're post RC 2, I'm backporting this because it's arguably a
major bug in a new feauture that will prevent several well-known
third-party apps from being ported to Python 3.
When iteration over a queryset raised an exception, the result cache
remained initialized with an empty list, so subsequent iterations returned
an empty list instead of raising an exception
Backport of 2cd0edaa47 from master.
Querying the reverse side of nullable to_field relation, where both
sides can contain null values resulted in incorrect results. The reason
was not detecting '' as NULL.
Refs #17541, backpatch of 09fcb70c80.
The admin_widgets tests were issuing click() to the browser but
didn't wait for the effects of those clicks. This caused the resulting
request to be processed concurrently with the test case. When using
in-memory SQLite this caused weird failures.
Also added wait_page_loaded() to admin selenium tests for code
reuse.
Fixed#19856, backpatch of 50677b29af
There was a variable overwrite error in negated join filtering. This
happened when add_filter() was adding the IS NULL condition to the
WHERE clause.
This is not a backport from master as there have been some other
refactorings which made this patch irrelevant.
The patch is from Ian Kelly.
The reason was that the except clause needed to remove a connection
from the django.db.connections dict, but other parts of Django do not
expect this to happen. In addition the except clause was silently
swallowing the exception messages.
Refs #19707, special thanks to Carl Meyer for pointing out that this
approach should be taken.
When a query had a complex where condition (a condition targeting more
than the base table) a subquery was used for deletion. However, the
query had default ordering from the model's meta and Oracle doesn't
work with ordered subqueries.
The regression was caused by fast-path deletion code introduced in
1cd6e04cd4 for fixing #18676.
Thanks to Dylan Klomparens for the report.
Backpatch of 8ef3235034
The regression was caused by using .none() when querying for related
models, and the origin field's value was None. This resulted in missing
custom related manager subclass as .none() returns plain QuerySet.
This isn't backport from master, in master .none() correctly preserves
the queryset's class.
Patch provided by Simon Charette, with some minor polish by committer.
Daniel Lindsley
Anssi Kääriäinen
Tai Lee
Florian Apolloner
Claude Paroz
Baptiste Mispelon
Simon Charette
Julien Phalip
Jacob Kaplan-Moss
Preston Holmes
Marc Tamlyn
Aymeric Augustin
Grzegorz Nosek
Carl Meyer
Nick Sandford
Tim Graham