Shared task
Fixed #34716 -- Fixed serialization of nested class methods in migrations.
PR #17087 ↗ · django/django · · merged Jul 18, 2023 · +14 −1 · base 4a72da71001f
what a new run launched now would send
Class methods from nested classes cannot be used as Field.default.
Description
(last modified by Mariusz Felisiak)
Given the following model:
class Profile(models.Model):
class Capability(models.TextChoices):
BASIC = ("BASIC", "Basic")
PROFESSIONAL = ("PROFESSIONAL", "Professional")
@classmethod
def default(cls) -> list[str]:
return [cls.BASIC]
capabilities = ArrayField(
models.CharField(choices=Capability.choices, max_length=30, blank=True),
null=True,
default=Capability.default
)
The resulting migration contained the following:
# ...
migrations.AddField(
model_name='profile',
name='capabilities',
field=django.contrib.postgres.fields.ArrayField(base_field=models.CharField(blank=True, choices=[('BASIC', 'Basic'), ('PROFESSIONAL', 'Professional')], max_length=30), default=appname.models.Capability.default, null=True, size=None),
),
# ...
As you can see, migrations.AddField is passed as argument "default" a wrong value "appname.models.Capability.default", which leads to an error when trying to migrate. The right value should be "appname.models.Profile.Capability.default".
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| Run | Model | Verdict |
|---|---|---|
| Aug 21, 12:31 UTC · completed | composer-2.5 | PASS |
| Aug 21, 12:31 UTC · completed | grok-4.6 | PASS |
| Aug 21, 12:31 UTC · completed | grok-4.6-low |
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| Aug 21, 12:31 UTC · completed | grok-4.6-medium | PASS |
| Aug 21, 12:31 UTC · completed | grok-4.6-xhigh | PASS |
Binary verdicts from the pinned judge (D27). Full attempt detail — candidate diff, transcript, timings — lives on each run page's score matrix.