Refs #23621 -- Fixed warning message when reloading models.

django/apps/registry.py

@@ -208,7 +208,7 @@ class Apps(object):
                 warnings.warn(
                     "Model '%s.%s' was already registered. "
                     "Reloading models is not advised as it can lead to inconsistencies, "
-                    "most notably with related models." % (model_name, app_label),
+                    "most notably with related models." % (app_label, model_name),
                     RuntimeWarning, stacklevel=2)
             else:
                 raise RuntimeError(

tests/apps/tests.py

@@ -237,7 +237,7 @@ class AppsTests(SimpleTestCase):
             self.assertEqual(len(w), 1)
             self.assertTrue(issubclass(w[-1].category, RuntimeWarning))
             self.assertEqual(str(w[-1].message),
-                 "Model 'southponies.apps' was already registered. "
+                 "Model 'apps.southponies' was already registered. "
                  "Reloading models is not advised as it can lead to inconsistencies, "
                  "most notably with related models.")