[5.0.x] Fixed #35020 -- Fixed ModelAdmin.lookup_allowed() for non-autofield primary keys.

Thanks Joshua Goodwin for the report.

Regression in 45ecd9acca9b36093e274f47b6877a5f79108d9e.

Backport of f80669d2f5a5f1db9e9b73ca893fefba34f955e7 from main

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/modeladmin/tests.py b/tests/modeladmin/tests.py
index f2763ecc0f..1a9dbdb7cb 100644
--- a/tests/modeladmin/tests.py
+++ b/tests/modeladmin/tests.py
@@ -163,6 +163,20 @@ class ModelAdminTests(TestCase):
         )
 
     @isolate_apps("modeladmin")
+    def test_lookup_allowed_non_autofield_primary_key(self):
+        class Country(models.Model):
+            id = models.CharField(max_length=2, primary_key=True)
+
+        class Place(models.Model):
+            country = models.ForeignKey(Country, models.CASCADE)
+
+        class PlaceAdmin(ModelAdmin):
+            list_filter = ["country"]
+
+        ma = PlaceAdmin(Place, self.site)
+        self.assertIs(ma.lookup_allowed("country__id__exact", "DE", request), True)
+
+    @isolate_apps("modeladmin")
     def test_lookup_allowed_foreign_primary(self):
         class Country(models.Model):
             name = models.CharField(max_length=256)