- Using ``model_url`` or ``model_path`` against a broken model graph

  (one with models that had a non-root model with a ``__name__`` of
  ``None``) caused an inscrutable error to be thrown: ( if not
  ``_must_quote[cachekey].search(s): TypeError: expected string or
  buffer``).  Now URLs and paths generated against graphs that have
  None names in intermediate nodes will replace the None with the
  empty string, and, as a result, the error won't be raised.  Of
  course the URL or path will still be bogus.
 

1 files changed, 1 insertions, 1 deletions

diff --git a/repoze/bfg/traversal.py b/repoze/bfg/traversal.py
index 02b6589ac..47ac5fa7f 100644
--- a/repoze/bfg/traversal.py
+++ b/repoze/bfg/traversal.py
@@ -213,7 +213,7 @@ def model_path_tuple(model, *elements):
 def _model_path_list(model, *elements):
     """ Implementation detail shared by model_path and model_path_tuple """
     lpath = reversed(list(lineage(model))[:-1])
-    path = [ location.__name__ for location in lpath ]
+    path = [ location.__name__ or '' for location in lpath ]
 
     if elements:
         path = path + list(elements)