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Code Issues 32 Releases Wiki Activity

Used _expression_refs_exclude() hook in CheckConstraint/UniqueConstraint.validate().

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This commit is contained in:
Mariusz Felisiak 2025-03-09 19:14:51 +01:00 committed by Sarah Boyce
parent f480d5d3ed
commit e44e8327d3
1 changed files with 20 additions and 18 deletions
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38
django/db/models/constraints.py
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@ -2,7 +2,7 @@ from enum import Enum
from types import NoneType
from django.core import checks
from django.core.exceptions import FieldDoesNotExist, FieldError, ValidationError
from django.core.exceptions import FieldDoesNotExist, ValidationError
from django.db import connections
from django.db.models.constants import LOOKUP_SEP
from django.db.models.expressions import Exists, ExpressionList, F, RawSQL
@ -206,13 +206,13 @@ class CheckConstraint(BaseConstraint):
def validate(self, model, instance, exclude=None, using=DEFAULT_DB_ALIAS):
against = instance._get_field_expression_map(meta=model._meta, exclude=exclude)
try:
if not Q(self.condition).check(against, using=using):
raise ValidationError(
self.get_violation_error_message(), code=self.violation_error_code
)
except FieldError:
pass
# Ignore constraints with excluded fields in condition.
if exclude and self._expression_refs_exclude(model, self.condition, exclude):
return
if not Q(self.condition).check(against, using=using):
raise ValidationError(
self.get_violation_error_message(), code=self.violation_error_code
)
def __repr__(self):
return "<%s: condition=%s name=%s%s%s>" % (
@ -660,16 +660,18 @@ class UniqueConstraint(BaseConstraint):
code=self.violation_error_code,
)
else:
# Ignore constraints with excluded fields in condition.
if exclude and self._expression_refs_exclude(
model, self.condition, exclude
):
return
against = instance._get_field_expression_map(
meta=model._meta, exclude=exclude
)
try:
if (self.condition & Exists(queryset.filter(self.condition))).check(
against, using=using
):
raise ValidationError(
self.get_violation_error_message(),
code=self.violation_error_code,
)
except FieldError:
pass
if (self.condition & Exists(queryset.filter(self.condition))).check(
against, using=using
):
raise ValidationError(
self.get_violation_error_message(),
code=self.violation_error_code,
)