Do not assume that you can iterate over a publishable object

doc/CHANGES.rst

@@ -14,6 +14,8 @@ http://docs.zope.org/zope2/releases/.
 
   - AccessControl = 2.13.8
 
+- ZPublisher: Do not assume that you can iterate over a publishable object
+
 2.13.15 (2012-06-22)
 --------------------
 

src/ZPublisher/BaseRequest.py

@@ -541,7 +541,8 @@ class BaseRequest:
             hasattr(parents[1], 'aq_base') and
             not hasattr(parents[1],'__bobo_traverse__')):
             base = parents[1].aq_base
-            if not (hasattr(base, entry_name) or entry_name in base):
+            if not (hasattr(base, entry_name) or 
+                (hasattr(entry_name, '__iter__') and entry_name in base)):
                 raise AttributeError(entry_name)
 
         # After traversal post traversal hooks aren't available anymore