Fixed #35752 -- Fixed crash when using In() lookup in filters.

django/db/models/lookups.py

@@ -300,7 +300,11 @@ class FieldGetDbPrepValueIterableMixin(FieldGetDbPrepValueMixin):
                 # An expression will be handled by the database but can coexist
                 # alongside real values.
                 pass
-            elif self.prepare_rhs and hasattr(self.lhs.output_field, "get_prep_value"):
+            elif (
+                self.prepare_rhs
+                and hasattr(self.lhs, "output_field")
+                and hasattr(self.lhs.output_field, "get_prep_value")
+            ):
                 rhs_value = self.lhs.output_field.get_prep_value(rhs_value)
             prepared_values.append(rhs_value)
         return prepared_values

tests/lookup/tests.py

@@ -24,6 +24,7 @@ from django.db.models.lookups import (
     Exact,
     GreaterThan,
     GreaterThanOrEqual,
+    In,
     IsNull,
     LessThan,
     LessThanOrEqual,
@@ -1511,6 +1512,25 @@ class LookupQueryingTests(TestCase):
             [self.s1, self.s3],
         )
 
+    def test_in_lookup_in_filter(self):
+        test_cases = [
+            ((), ()),
+            ((1942,), (self.s1,)),
+            ((1842,), (self.s2,)),
+            ((2042,), (self.s3,)),
+            ((1942, 1842), (self.s1, self.s2)),
+            ((1942, 2042), (self.s1, self.s3)),
+            ((1842, 2042), (self.s2, self.s3)),
+            ((1942, 1942, 1942), (self.s1,)),
+            ((1942, 2042, 1842), (self.s1, self.s2, self.s3)),
+        ]
+
+        for years, seasons in test_cases:
+            with self.subTest(years=years, seasons=seasons):
+                self.assertSequenceEqual(
+                    Season.objects.filter(In(F("year"), years)).order_by("pk"), seasons
+                )
+
     def test_filter_lookup_lhs(self):
         qs = Season.objects.annotate(before_20=LessThan(F("year"), 2000)).filter(
             before_20=LessThan(F("year"), 1900),