django.git/django/db/models/fields/related.py, branch stable/5.2.x

[5.2.x] Fixed #36530 -- Extended fields.E347 to check for ManyToManyField involving CompositePrimaryKey on either side.

2025-08-05T11:46:56Z

Thanks to Jacob Walls for the report. Backport of 2013092b693be0ebdf36f41dc61615a2de1bbe31 from main.

[5.2.x] Fixed #36061 -- Added migration support for ManyToManyField.through_fields.

2025-02-06T14:27:26Z

Added through_fields support to ManyToManyField.deconstruct. Thanks to Simon Charette for pointers and the review. Backport of b13b8684a04d0bc1081104c5973c62c27dc673b0 from main.

Fixed #36034 -- Added system check for ForeignKey/ForeignObject/ManyToManyField to CompositePrimaryKeys.

2025-01-02T12:06:47Z

Fixed #373 -- Added CompositePrimaryKey.

2024-11-29T10:23:04Z

Thanks Lily Foote and Simon Charette for reviews and mentoring this Google Summer of Code 2024 project. Co-authored-by: Simon Charette Co-authored-by: Lily Foote

Refs #373 -- Added Model._is_pk_set() abstraction to check if a Model's PK is set.

2024-09-09T20:46:50Z

Refs #16055 -- Adjusted deprecation warning stacklevel in get_joining_columns()/get_reverse_joining_columns().

2024-08-28T14:44:05Z

Fixed #35580 -- Allowed related fields referencing auto-created through models.

2024-07-09T11:50:12Z

Fixed #35569 -- Improved wording of invalid ForeignKey error message.

2024-07-04T09:35:03Z

Fixed #35405 -- Converted get_cache_name into a cached property in FieldCacheMixin.

2024-05-21T19:19:29Z

FieldCacheMixin is used by related fields to track their cached values. This work migrates get_cache_name() to be a cached property to optimize performance by reducing unnecessary function calls when working with related fields, given that its value remains constant. Co-authored-by: Simon Charette Co-authored-by: Sarah Boyce <42296566+sarahboyce@users.noreply.github.com> Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>

Fixed #35285 -- Optimized ForeignObject._check_unique_target().

2024-03-11T05:52:50Z