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Code Issues 32 Releases Wiki Activity

[4.2.x] Refs #29799 -- Added field instance lookups to suggestions in FieldErrors.

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Bug in cd1afd553f9c175ebccfc0f50e72b43b9604bd97.
Backport of 3afdc9e9b47d5bdd1bd653633b4cb2357478ade5 from main
This commit is contained in:
Mariusz Felisiak 2023-03-28 19:18:48 +02:00
parent 99ba5b43f0
commit be6a309b1d
2 changed files with 13 additions and 3 deletions
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2
django/db/models/sql/query.py
View File

@ -1300,7 +1300,7 @@ class Query(BaseExpression):
else:
output_field = lhs.output_field.__class__
suggested_lookups = difflib.get_close_matches(
name, output_field.get_lookups()
name, lhs.output_field.get_lookups()
)
if suggested_lookups:
suggestion = ", perhaps you meant %s?" % " or ".join(suggested_lookups)

14
tests/lookup/tests.py
View File

@ -19,7 +19,7 @@ from django.db.models import (
Value,
When,
)
from django.db.models.functions import Cast, Substr
from django.db.models.functions import Cast, Length, Substr
from django.db.models.lookups import (
Exact,
GreaterThan,
@ -29,7 +29,7 @@ from django.db.models.lookups import (
LessThanOrEqual,
)
from django.test import TestCase, skipUnlessDBFeature
from django.test.utils import isolate_apps
from django.test.utils import isolate_apps, register_lookup
from .models import (
Article,
@ -784,6 +784,16 @@ class LookupTests(TestCase):
):
Article.objects.filter(pub_date__gobbledygook="blahblah")
def test_unsupported_lookups_custom_lookups(self):
slug_field = Article._meta.get_field("slug")
msg = (
"Unsupported lookup 'lengtp' for SlugField or join on the field not "
"permitted, perhaps you meant length?"
)
with self.assertRaisesMessage(FieldError, msg):
with register_lookup(slug_field, Length):
Article.objects.filter(slug__lengtp=20)
def test_relation_nested_lookup_error(self):
# An invalid nested lookup on a related field raises a useful error.
msg = (