[1.6.x] Fixed LogEntry.get_admin_url() for non-existent models.

Regression introduced by [369b6fa]; refs #18169.

Backport of 1b47508ac8 from master

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/admin_views/tests.py b/tests/admin_views/tests.py
index 9374dfff24..3c276199ff 100644
--- a/tests/admin_views/tests.py
+++ b/tests/admin_views/tests.py
@@ -1525,6 +1525,17 @@ class AdminViewStringPrimaryKeyTest(TestCase):
         self.assertEqual(counted_presence_before - 1,
                           counted_presence_after)
 
+    def test_logentry_get_admin_url(self):
+        "LogEntry.get_admin_url returns a URL to edit the entry's object or None for non-existent (possibly deleted) models"
+        log_entry_name = "Model with string primary key"  # capitalized in Recent Actions
+        logentry = LogEntry.objects.get(content_type__name__iexact=log_entry_name)
+        model = "modelwithstringprimarykey"
+        desired_admin_url = "/test_admin/admin/admin_views/%s/%s/" % (model, escape(iri_to_uri(urlquote(quote(self.pk)))))
+        self.assertEqual(logentry.get_admin_url(), desired_admin_url)
+
+        logentry.content_type.model = "non-existent"
+        self.assertEqual(logentry.get_admin_url(), None)
+
     def test_deleteconfirmation_link(self):
         "The link from the delete confirmation page referring back to the changeform of the object should be quoted"
         response = self.client.get('/test_admin/admin/admin_views/modelwithstringprimarykey/%s/delete/' % quote(self.pk))