chango.git/django/db/models/fields, branch devmain

Fixed #37142 -- Moved django_file_prefixes() to django.utils.warnings.

2026-06-10T14:17:34Z

Fixed #37053 -- Added validate=True to base64.b64decode() calls.

2026-05-06T00:13:40Z

Fixed #35870 -- Made blank choice label in forms more accessible.

2026-04-22T21:06:29Z

Added new constant django.db.models.fields.BLANK_CHOICE_LABEL for an accessible and translatable blank choice label in forms. Deprecated django.db.models.fields.BLANK_CHOICE_DASH constant. Added the immediately deprecated transitional setting USE_BLANK_CHOICE_DASH. Co-Authored-By: Marijke Luttekes

Fixed #27150 -- Made base File objects truthy by default.

2026-04-14T11:32:08Z

Fixed #36973 -- Made fields.E348 check detect further clashes between managers and related_names.

2026-04-02T19:54:23Z

Clashes were only detected for self-referential relationships, i.e. ForeignKey("self"). Refs #22977. Bug in 6888375c53476011754f778deabc6cdbfa327011. Thanks JaeHyuckSa for the thorough review!

Refs #36494 -- Prevented crash in JSONField numeric lookups with expressions.

2026-03-24T21:54:02Z

Fixed #36987 -- Observed prepared argument in UUIDField.get_db_prep_value().

2026-03-18T12:22:29Z

This avoids two isinstance() calls per UUID value.

Fixed #36927 -- Optimized Field.deconstruct().

2026-03-13T20:29:10Z

Fixed #36727 -- Deprecated Field.get_placeholder in favor of get_placeholder_sql.

2026-03-13T00:01:02Z

The lack of ability of the get_placeholder call chain to return SQL and parameters separated so they can be mogrified by the backend at execution time forced implementations to dangerously interpolate potentially user controlled values. The get_placeholder_sql name was chosen due to its proximity to the previous method, but other options such as Field.as_sql were considered but ultimately rejected due to its different input signature compared to Expression.as_sql that might have lead to confusion. There is a lot of overlap between what Field.get_db_prep_value and get_placeholder_sql do but folding the latter in the former would require changing its return signature to return expression which is a way more invasive change than what is proposed here. Given we always call get_db_prep_value it might still be an avenue worth exploring in the future to offer a publicly documented interface to allow field to take an active part in the compilation chain. Thanks Jacob for the review.

Refs #28455 -- Avoided QuerySet cloning for Prefetch() when queryset is not provided.

2026-03-11T17:05:44Z

Co-authored-by: Mariusz Felisiak