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Code Issues 25 Releases Wiki Activity

Refs #35638 -- Avoided wrapping expressions with Value in _get_field_value_map() and renamed to _get_field_expression_map().

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David Sanders 2024-08-05 08:20:48 +02:00 committed by Sarah Boyce
parent 304d256674
commit 91a038754b
3 changed files with 13 additions and 6 deletions
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2
django/contrib/postgres/constraints.py
View File

@ -178,7 +178,7 @@ class ExclusionConstraint(BaseConstraint):
def validate(self, model, instance, exclude=None, using=DEFAULT_DB_ALIAS):
queryset = model._default_manager.using(using)
replacement_map = instance._get_field_value_map(
replacement_map = instance._get_field_expression_map(
meta=model._meta, exclude=exclude
)
replacements = {F(field): value for field, value in replacement_map.items()}

9
django/db/models/base.py
View File

@ -1333,12 +1333,17 @@ class Model(AltersData, metaclass=ModelBase):
setattr(self, cachename, obj)
return getattr(self, cachename)
def _get_field_value_map(self, meta, exclude=None):
def _get_field_expression_map(self, meta, exclude=None):
if exclude is None:
exclude = set()
meta = meta or self._meta
field_map = {
field.name: Value(getattr(self, field.attname), field)
field.name: (
value
if (value := getattr(self, field.attname))
and hasattr(value, "resolve_expression")
else Value(value, field)
)
for field in meta.local_concrete_fields
if field.name not in exclude and not field.generated
}

8
django/db/models/constraints.py
View File

@ -241,7 +241,7 @@ class CheckConstraint(BaseConstraint):
return schema_editor._delete_check_sql(model, self.name)
def validate(self, model, instance, exclude=None, using=DEFAULT_DB_ALIAS):
against = instance._get_field_value_map(meta=model._meta, exclude=exclude)
against = instance._get_field_expression_map(meta=model._meta, exclude=exclude)
try:
if not Q(self.condition).check(against, using=using):
raise ValidationError(
@ -638,7 +638,7 @@ class UniqueConstraint(BaseConstraint):
return
replacements = {
F(field): value
for field, value in instance._get_field_value_map(
for field, value in instance._get_field_expression_map(
meta=model._meta, exclude=exclude
).items()
}
@ -668,7 +668,9 @@ class UniqueConstraint(BaseConstraint):
code=self.violation_error_code,
)
else:
against = instance._get_field_value_map(meta=model._meta, exclude=exclude)
against = instance._get_field_expression_map(
meta=model._meta, exclude=exclude
)
try:
if (self.condition & Exists(queryset.filter(self.condition))).check(
against, using=using