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path: root/docs/ref/checks.txt
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2026-04-22Fixed #10919 -- Added delete_confirmation_max_display to ModelAdmin.Rodrigo Vieira
The new ModelAdmin.delete_confirmation_max_display attribute allows limiting the number of related objects shown on the delete confirmation page. When the limit is reached, a "…and N more objects." message is shown. The feature relies on a new truncated_unordered_list template filter added to django.contrib.admin.templatetags.admin_filters. Thanks Jacob Tyler Walls for the review and guidance, Tobias McNulty for the report, and terminator14 for the solution suggested.
2026-04-19Fixed #37024 -- Made SITE_ID system check validation use Site._meta.pk.Tim Graham
2025-12-22Refs #36305 -- Fixed indentation in checks and middleware documentation.ankan0503
2025-12-22Fixed #36806 -- Added system check for null kwarg in GeneratedField.Nilesh Kumar Pahari
The null argument has no effect on GeneratedField since the nullability of the column depends on the database and expression used.
2025-12-16Fixed #36594 -- Improved UniqueConstraint's nulls_distinct system check message.Mridul Dhall
Clarified that the nulls_distinct argument is not supported, as opposed to certain values for the argument. Thanks Russell Owen for the report.
2025-11-23Refs #21961 -- Added DatabaseFeatures.supports_on_delete_db_(cascade/null) ↵Tim Graham
feature flags. Needed on MongoDB. Co-Authored-By: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2025-11-20Refs #36663, #36739 -- Added release note for running checks against all ↵Storm B. Heg
databases.
2025-11-19Fixed #26609 -- Extended fields.E004 system check for unordered iterables.Mariusz Felisiak
Co-authored-by: Karl Wooster <karl.wooster@alleima.com>
2025-11-17Fixed #24920 -- Added support for DecimalField with no precision.Mariusz Felisiak
Thanks Lily for the review.
2025-10-18Fixed #21961 -- Added support for database-level delete options for ForeignKey.Mariusz Felisiak
Thanks Simon Charette for pair programming. Co-authored-by: Nick Stefan <NickStefan12@gmail.com> Co-authored-by: Akash Kumar Sen <71623442+Akash-Kumar-Sen@users.noreply.github.com> Co-authored-by: Simon Charette <charette.s@gmail.com>
2025-10-13Fixed #36611, Refs #36580 -- Added system check for multicolumn ↵Sarah Boyce
ForeignObject in Meta.indexes/constraints/unique_together. ForeignObjects with multiple `from_fields` are not supported in these options. Co-authored-by: Jacob Walls <jacobtylerwalls@gmail.com> Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>
2025-10-09Corrected admin check IDs in docs.Mariusz Felisiak
2025-09-17Refs #35859 -- Removed support for Task enqueuing on transaction commit.Jacob Walls
This removes the ability to configure Task enqueueing via a setting, since the proposed `ENQUEUE_ON_COMMIT` did not support multi-database setups. Thanks to Simon Charette for the report. Follow-up to 4289966d1b8e848e5e460b7c782dac009d746b20.
2025-09-16Fixed #35859 -- Added background Tasks framework interface.Jake Howard
This work implements what was defined in DEP 14 (https://github.com/django/deps/blob/main/accepted/0014-background-workers.rst). Thanks to Raphael Gaschignard, Eric Holscher, Ran Benita, Sarah Boyce, Jacob Walls, and Natalia Bidart for the reviews.
2025-09-05Fixed #36564 -- Changed DEFAULT_AUTO_FIELD from AutoField to BigAutoField.Tim Graham
2025-08-25Refs #36485 -- Rewrapped docs to 79 columns line length.David Smith
Lines in the docs files were manually adjusted to conform to the 79 columns limit per line (plus newline), improving readability and consistency across the content.
2025-08-05Fixed #36530 -- Extended fields.E347 to check for ManyToManyField involving ↵jkhall81
CompositePrimaryKey on either side. Thanks to Jacob Walls for the report.
2025-06-27Fixed #15727 -- Added Content Security Policy (CSP) support.Rob Hudson
This initial work adds a pair of settings to configure specific CSP directives for enforcing or reporting policy violations, a new `django.middleware.csp.ContentSecurityPolicyMiddleware` to apply the appropriate headers to responses, and a context processor to support CSP nonces in templates for safely inlining assets. Relevant documentation has been added for the 6.0 release notes, security overview, a new how-to page, and a dedicated reference section. Thanks to the multiple reviewers for their precise and valuable feedback. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>
2025-06-18Fixed #32770 -- Added system check to ensure django.contrib.postgres is ↵Clifford Gama
installed when using its features. Added postgres.E005 to validate 'django.contrib.postgres' is in INSTALLED_APPS when using: * PostgreSQL-specific fields (ArrayField, HStoreField, range fields, SearchVectorField), * PostgreSQL indexes (PostgresIndex and all subclasses), and * ExclusionConstraint The check provides immediate feedback during system checks rather than failing later with obscure runtime and database errors. Thanks to Simon Charette and Sarah Boyce for reviews.
2025-03-31Fixed #22977 -- Added system check for clashing managers and reverse related ↵Anthony Joseph
fields. With thanks to Konrad Świat, Loïc Bistuer, Russell Keith-Magee, and Mariusz Felisiak. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2025-03-05Fixed typo in docs/ref/checks.txt.hesham942
2025-01-02Fixed #36034 -- Added system check for ↵Mariusz Felisiak
ForeignKey/ForeignObject/ManyToManyField to CompositePrimaryKeys.
2024-12-17Fixed #35992, Fixed #35997 -- Added system check for CompositePrimaryKeys in ↵Mariusz Felisiak
Meta.indexes/constraints/unique_together. CompositePrimaryKeys are not supported in any of these options.
2024-11-29Fixed #373 -- Added CompositePrimaryKey.Bendeguz Csirmaz
Thanks Lily Foote and Simon Charette for reviews and mentoring this Google Summer of Code 2024 project. Co-authored-by: Simon Charette <charette.s@gmail.com> Co-authored-by: Lily Foote <code@lilyf.org>
2024-10-15Fixed #35656 -- Added an autodetector attribute to the makemigrations and ↵leondaz
migrate commands.
2024-05-22Fixed #31405 -- Added LoginRequiredMiddleware.Hisham Mahmood
Co-authored-by: Adam Johnson <me@adamj.eu> Co-authored-by: Mehmet İnce <mehmet@mehmetince.net> Co-authored-by: Sarah Boyce <42296566+sarahboyce@users.noreply.github.com>
2024-03-27Fixed #35233 -- Moved template engine system checks to backend methods.Giannis Terzopoulos
Thanks Adam Johnson for reviews.
2024-02-05Fixed #10743 -- Allowed lookups for related fields in ModelAdmin.list_display.Tom Carrick
Co-authored-by: Alex Garcia <me@alexoteiza.com> Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Co-authored-by: Nina Menezes <https://github.com/nmenezes0>
2023-11-14Refs #34944 -- Propagated system checks for GeneratedField.output_field.Mariusz Felisiak
2023-10-27Doc'd writing integration tests for the system check framework.Marc Gibbons
2023-09-18Refs #33872 -- Removed ↵Mariusz Felisiak
django.contrib.postgres.fields.CIText/CICharField/CIEmailField/CITextField. Per deprecation timeline.
2023-09-18Refs #27236 -- Removed Meta.index_together per deprecation timeline.Mariusz Felisiak
2023-09-07Fixed #31300 -- Added GeneratedField model field.Jeremy Nauta
Thanks Adam Johnson and Paolo Melchiorre for reviews. Co-Authored-By: Lily Foote <code@lilyf.org> Co-Authored-By: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2023-08-31Refs #34712 -- Added system check for staticfiles storage in STORAGES setting.Bruno Alla
Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com> Co-authored-by: Natalia Bidart <124304+nessita@users.noreply.github.com>
2023-08-30 Fixed #31262 -- Added support for mappings on model fields and ↵Nick Pope
ChoiceField's choices.
2023-07-19Fixed #34701 -- Added support for NULLS [NOT] DISTINCT on PostgreSQL 15+.Simon Charette
2023-07-12Fixed typo in docs/ref/checks.txt.Ryan Chausse
2023-07-11Fixed #34691 -- Added system check for unmatched angle brackets in path().Amir Karimi
2023-06-21Fixed #34345 -- Added system check for ManyToManyFields with intermediate ↵Hrushikesh
tables in ModelAdmin.filter_horizontal/vertical.
2023-06-20Corrected admin.E013 check message in docs.Mariusz Felisiak
2023-06-05Fixed #34601 -- Added field name to check message for ↵nessita
ModelAdmin.readonly_fields. Co-authored-by: Rick van Hattem <wolph@wol.ph>
2023-05-12Fixed #470 -- Added support for database defaults on fields.Ian Foote
Special thanks to Hannes Ljungberg for finding multiple implementation gaps. Thanks also to Simon Charette, Adam Johnson, and Mariusz Felisiak for reviews.
2023-04-24Fixed #34481 -- Added system check for reverse related fields in ↵Bakdolot
ModelAdmin.list_display.
2022-12-28Fixed #18468 -- Added support for comments on columns and tables.kimsoungryoul
Thanks Jared Chung, Tom Carrick, David Smith, Nick Pope, and Mariusz Felisiak for reviews. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com> Co-authored-by: Nick Pope <nick@nickpope.me.uk>
2022-10-03Refs #32987 -- Relaxed system check for template tag modules with the same ↵Mariusz Felisiak
name by turning into a warning. Thanks Claude Paroz for the report. Regression in 004b4620f6f4ad87261e149898940f2dcd5757ef.
2022-08-03Fixed #33872 -- Deprecated ↵Mariusz Felisiak
django.contrib.postgres.fields.CIText/CICharField/CIEmailField/CITextField.
2022-07-26Refs #27236 -- Reverted "Refs #27236 -- Added generic mechanism to handle ↵Mariusz Felisiak
the deprecation of migration operations." This reverts commit 41019e48bbf082c985e6ba3bad34d118b903bff1.
2022-07-26Refs #27236 -- Reverted AlterIndexTogether deprecation.Mariusz Felisiak
This partly reverts a6385b382e05a614a99e5a5913d8e631823159a2.
2022-07-12Fixed #27236 -- Deprecated Meta.index_together in favor of Meta.indexes.David Wobrock
This also deprecates AlterIndexTogether migration operation.
2022-07-08Refs #27236 -- Added generic mechanism to handle the deprecation of ↵David Wobrock
migration operations.
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