75dfa92a05
Fixed #29908 -- Fixed setting of foreign key after related set access if ForeignKey uses to_field.
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Adjusted known related objects handling of target fields which relies on
from and to_fields and has the side effect of fixing a bug bug causing
N+1 queries when using reverse foreign objects.
Thanks Carsten Fuchs for the report.
2018-11-08 19:51:15 -05:00
bc7dd8490b
Fixed #21171 -- Avoided starting a transaction when a single (or atomic queries) are executed.
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Checked the following locations:
* Model.save(): If there are parents involved, take the safe way and use
transactions since this should be an all or nothing operation.
If the model has no parents:
* Signals are executed before and after the previous existing
transaction -- they were never been part of the transaction.
* if `force_insert` is set then only one query is executed -> atomic
by definition and no transaction needed.
* same applies to `force_update`.
* If a primary key is set and no `force_*` is set Django will try an
UPDATE and if that returns zero rows it tries an INSERT. The first
case is completly save (single query). In the second case a
transaction should not produce different results since the update
query is basically a no-op then (might miss something though).
* QuerySet.update(): no signals issued, single query -> no transaction
needed.
* Model/Collector.delete(): This one is fun due to the fact that is
does many things at once.
Most importantly though: It does send signals as part of the
transaction, so for maximum backwards compatibility we need to be
conservative.
To ensure maximum compatibility the transaction here is removed only
if the following holds true:
* A single instance is being deleted.
* There are no signal handlers attached to that instance.
* There are no deletions/updates to cascade.
* There are no parents which also need deletion.
2018-10-17 12:19:02 +02:00
8ef8bc0f64
Refs #28909 -- Simplifed code using unpacking generalizations.
2018-09-28 09:57:12 -04:00
9cbdb44014
Fixed #23646 -- Added QuerySet.bulk_update() to efficiently update many models.
2018-09-18 16:14:44 -04:00
50b8493581
Refs #29654 -- Replaced three dots with ellipsis character in output strings.
2018-08-22 09:13:58 -04:00
f1fbef6cd1
Fixed #28668 -- Allowed QuerySet.bulk_create() to ignore insert conflicts.
2018-08-03 17:40:46 -04:00
271542dad1
Fixed #29499 -- Fixed race condition in QuerySet.update_or_create().
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A race condition happened when the object didn't already exist and
another process/thread created the object before update_or_create()
did and then attempted to update the object, also before update_or_create()
saved the object. The update by the other process/thread could be lost.
2018-08-02 17:07:48 -04:00
6ae7aaa7d6
Fixed #29413 -- Prevented evaluation of QuerySet.get_or_create()/update_or_create() defaults unless needed.
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Removed the logic added in 81e05a418ddbffffa7dc
2018-07-16 22:08:43 -04:00
4d48ddd8f9
Fixed #28917 -- Prevented Paginator's unordered warning on EmptyQuerySet.
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Thanks carltongibson for the idea and weijunji for the initial patch.
2018-07-16 14:28:47 -04:00
6104875a2c
Fixed #29230 -- Fixed nested prefetches that clash with descriptors.
2018-05-27 21:45:51 -04:00
6d1f576945
Fixed #29367 -- Fixed model state on objects with a primary key created with QuerySet.bulk_create().
2018-04-27 17:57:38 -04:00
534d8d875e
Fixed #28600 -- Added prefetch_related() support to RawQuerySet.
2018-04-19 13:48:27 -04:00
f2026ca5e2
Fixed #29337 -- Added __len__() & __bool__() to RawQuerySet.
2018-04-19 12:46:31 -04:00
ec0319ff82
Fixed #29339 -- Added result caching to RawQuerySet.
2018-04-19 11:35:49 -04:00
c1c163b427
Fixed #28574 -- Added QuerySet.explain().
2018-04-19 10:52:19 -04:00
e1f13f1551
Fixed #29320 -- Added an exception when an annotation alias matches a ForeignKey attname.
2018-04-12 21:15:40 -04:00
074a2f7f58
Refs #28909 -- Simplifed code using unpacking generalizations.
2018-02-26 18:23:31 +01:00
d0a42a14c0
Fixed imports per isort 4.3.1.
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Partially reverted 9bcf73d788
2018-02-02 14:44:07 -05:00
9bcf73d788
Fixed imports per isort 4.3.0.
2018-02-01 09:29:46 +01:00
a455e732a0
Fixed #28650 -- Added TruncWeek database function.
2018-01-27 09:59:13 -05:00
3187c89d6f
Fixed #29067 -- Fixed regression in QuerySet.values_list(..., flat=True) followed by annotate().
2018-01-26 09:35:50 -05:00
8dc675d90f
Fixed #28838 -- Fixed Model.save() crash if the base manager annotates with a related field.
2018-01-25 10:12:04 -05:00
ef6c680f60
Removed unused variable in QuerySet._earliest_or_latest().
2017-12-27 09:04:46 -05:00
d13a9e44de
Fixed #28909 -- Simplified code using tuple/list/set/dict unpacking.
2017-12-11 07:08:45 -05:00
02d9419fe3
Fixed #28907 -- Removed unnecessary if statements.
2017-12-07 17:12:00 -05:00
d2afa5eb23
Fixed #28860 -- Removed unnecessary len() calls.
2017-12-04 10:35:23 -05:00
746caf3ef8
Fixed #28837 -- Fixed test client crash if an exception with more than one arg is raised.
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Also removed usage of the problematic pattern elsewhere.
Regression in 6e55e1d88a
2017-11-28 18:55:23 -05:00
d97f026a7a
Fixed #28817 -- Made QuerySet.iterator() use server-side cursors after values() and values_list().
2017-11-21 10:33:56 -05:00
a2626cb3fe
Fixed #28674 -- Removed unused check in QuerySet._batched_insert().
2017-10-03 19:56:44 -04:00
5d9b736fd8
Fixed #28652 -- Fixed a few comments in django/db/models/*.
2017-10-02 11:15:26 -04:00
2b5a511bd9
Merged hash() calls.
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Thanks Simon Charette for the review.
2017-09-28 12:12:47 -04:00
4508fafe16
Simplified various __eq__() methods.
2017-09-28 09:18:37 -04:00
01d440fa1e
Fixed #27332 -- Added FilteredRelation API for conditional join (ON clause) support.
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Thanks Anssi Kääriäinen for contributing to the patch.
2017-09-22 11:53:17 -04:00
6e4c6281db
Reverted "Fixed #27818 -- Replaced try/except/pass with contextlib.suppress()."
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This reverts commit 550cb3a365
2017-09-07 08:16:21 -04:00
f3c9562143
Fixed #15648 -- Allowed QuerySet.values_list() to return a namedtuple.
2017-09-06 15:32:32 -04:00
379caf397e
Replaced deque() with list() in prefetch_related_objects().
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deque() isn't needed since algorithm doesn't require FIFO.
2017-09-06 08:13:18 -04:00
ad4a8acdb5
Fixed #11557 -- Added support for a list of fields in Meta.get_latest_by and QuerySet.earliest()/latest().
2017-09-05 20:14:54 -04:00
d67cce4da8
Fixed typo in django/db/models/query.py docstring.
2017-09-05 15:28:37 -04:00
dca67bb2c2
Refs #28459 -- Improved performance of SQLCompiler.apply_converters().
2017-08-23 16:26:24 -04:00
4dfd6b88d5
Refs #28459 -- Improved performance of FlatValuesListIterable.
2017-08-22 11:26:07 -04:00
8a99a7d2d5
Simplified RelatedPopulator.populate().
2017-08-15 09:48:07 -04:00
6542999c54
Removed redundant condition in QuerySet.resolve_expression().
2017-08-15 09:44:27 -04:00
bfb746f983
Refs #16043 -- Refactored internal fields value cache.
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* Removed all hardcoded logic for _{fieldname}_cache.
* Added an internal API for interacting with the field values cache.
Thanks carljm and MarkusH for support.
2017-08-10 12:06:02 -04:00
fb0bdff981
Refs #28459 -- Improved performance of ValuesIterable.
2017-08-08 11:02:59 +05:00
ba1d82df63
Refs #28459 -- Improved performance of select_related() when model is prefetched from its parent.
2017-08-07 18:55:13 -04:00
ca46f4688c
Refs #28459 -- Improved performance of SQLCompiler.results_iter().
2017-08-07 17:06:15 -04:00
7bd9639406
Simplified check that pk is fetched in RawQuerySet.__iter__().
2017-08-02 08:56:16 -04:00
2d136ede8a
Fixed #28459 -- Improved performance of ValuesListIterable.
2017-08-01 14:44:02 -04:00
6155bc4a51
Refs #20880 -- Removed non-cloning logic from Query.clone().
2017-07-31 15:31:29 -04:00
66933a6619
Refs #20880 -- Removed non-cloning logic from QuerySet._clone().
2017-07-31 13:57:45 -04:00
Simon Charette
Florian Apolloner
Sergey Fedoseev
Tom Forbes
Claude Paroz
Michael Sanders
Viktor Danyliuk
Josh Schneier
Paulo
Oscar Esgalha
Adnan Umer
Flávio Juvenal
Mariusz Felisiak
Tim Graham
Sigurd Ljødal
Jon Dufresne
shanghui
Mads Jensen
Nick Pope
Дилян Палаузов
Nicolas Delaby
Dražen Odobašić
Дилян Палаузов
Nicolas Delaby
François Freitag
Boris Burkov
Anssi Kääriäinen