[Python] Accessing a foreign key's base classes's fields in UniqueConstraint

In the UniqueConstraint for personality -> language, I'm getting the error FieldDoesNotExist

For example, if my code looked like this:

class LanguageModel(models.Model):
language = models.CharField(
max_length=16,
default="en",
)

class Meta:
abstract = True

class PersonModel(LanguageModel):
created_at = models.DateTimeField(editable=False, auto_now_add=True)
updated_at = models.DateTimeField(editable=False, auto_now=True)

class Meta:
managed = True
db_table = "PersonModel"

class CollectionofPeople(models.Model):
id = models.UUIDField(primary_key="True", default=uuid.uuid4, editable=False)
name = models.CharField(max_length=32)
created_at = models.DateTimeField(editable=False, auto_now_add=True)
updated_at = models.DateTimeField(editable=False, auto_now=True)

is_default = models.BooleanField(default=False)

personality = models.ForeignKey(
"PersonModel",
null=True,
on_delete=models.CASCADE,
)

class Meta:
managed = True
db_table = "CollectionofThings"
constraints = [
models.UniqueConstraint(
fields=["personality__language", "name"],
name="unique_personality_language",
)
]



Is it possible to access the personality language in a UniqueConstraint? Or more generally, can I access a foreign key's abstract base class's field?

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