[6.0.x] Fixed #36796 -- Handled lazy routes correctly in RoutePattern.match().

Coerce lazy route values to `str` at match time to support prefix and
endpoint matching when using `gettext_lazy()` route paths.

Regression in f920937c8a.

Thanks to Andrea Angelini for the report, and to Jake Howard and Jacob
Walls for reviews.

Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>

Backport of 7bf3ac3ee2 from main.

django/urls/resolvers.py

@@ -341,8 +341,8 @@ class RoutePattern(CheckURLMixin):
             if self._route == path:
                 return "", (), {}
         # If this isn't an endpoint, the path should start with the route.
-        elif path.startswith(self._route):
-            return path.removeprefix(self._route), (), {}
+        elif path.startswith(route := str(self._route)):
+            return path.removeprefix(route), (), {}
         return None
 
     def check(self):

docs/releases/6.0.1.txt

@@ -31,3 +31,7 @@ Bugfixes
 * Fixed a crash in Django 6.0 caused by infinite recursion when calling
   ``repr()`` on an unevaluated ``django.utils.csp.LazyNonce`` instance
   (:ticket:`36810`).
+
+* Fixed a regression in Django 6.0 where :func:`~django.urls.path` routes
+  defined using :func:`~django.utils.translation.gettext_lazy` failed to
+  resolve correctly (:ticket:`36796`).

tests/urlpatterns/lazy_path_urls.py

@@ -0,0 +1,9 @@
+from django.urls import include, path
+from django.utils.translation import gettext_lazy as _
+
+from . import views
+
+urlpatterns = [
+    path(_("included_urls/"), include("urlpatterns.included_urls")),
+    path(_("lazy/<slug:slug>/"), views.empty_view, name="lazy"),
+]

tests/urlpatterns/test_resolvers.py

@@ -3,6 +3,8 @@ from django.test.utils import override_settings
 from django.urls.resolvers import RegexPattern, RoutePattern, get_resolver
 from django.utils.translation import gettext_lazy as _
 
+from . import views
+
 
 class RegexPatternTests(SimpleTestCase):
     def test_str(self):
@@ -19,6 +21,21 @@ class RoutePatternTests(SimpleTestCase):
         self.assertEqual(len(RoutePattern("translated/<int:foo>").converters), 1)
         self.assertEqual(len(RoutePattern(_("translated/<int:foo>")).converters), 1)
 
+    def test_match_lazy_route_without_converters(self):
+        pattern = RoutePattern(_("test/"))
+        result = pattern.match("test/child/")
+        self.assertEqual(result, ("child/", (), {}))
+
+    def test_match_lazy_route_endpoint(self):
+        pattern = RoutePattern(_("test/"), is_endpoint=True)
+        result = pattern.match("test/")
+        self.assertEqual(result, ("", (), {}))
+
+    def test_match_lazy_route_with_converters(self):
+        pattern = RoutePattern(_("test/<int:pk>/"))
+        result = pattern.match("test/123/child/")
+        self.assertEqual(result, ("child/", (), {"pk": 123}))
+
 
 class ResolverCacheTests(SimpleTestCase):
     @override_settings(ROOT_URLCONF="urlpatterns.path_urls")
@@ -27,3 +44,17 @@ class ResolverCacheTests(SimpleTestCase):
         # settings.ROOT_URLCONF is the same cached object.
         self.assertIs(get_resolver(), get_resolver("urlpatterns.path_urls"))
         self.assertIsNot(get_resolver(), get_resolver("urlpatterns.path_dynamic_urls"))
+
+
+class ResolverLazyIncludeTests(SimpleTestCase):
+
+    def test_lazy_route_resolves(self):
+        resolver = get_resolver("urlpatterns.lazy_path_urls")
+        for url_path, name in [
+            ("/lazy/test-me/", "lazy"),
+            ("/included_urls/extra/test/", "inner-extra"),
+        ]:
+            with self.subTest(name=name):
+                match = resolver.resolve(url_path)
+                self.assertEqual(match.func, views.empty_view)
+                self.assertEqual(match.url_name, name)