Implement traversal to attributes of a view via an adapter.

src/Products/Five/browser/configure.zcml

@@ -25,6 +25,8 @@
       provides="zope.container.interfaces.INameChooser"
       />
 
+  <adapter factory=".metaconfigure.SimplePublishTraverse" />
+
   <!-- Menu access -->
   <browser:page
       for="*"

src/Products/Five/browser/metaconfigure.py

@@ -444,16 +444,8 @@ class ViewNotCallableError(AttributeError, NotImplementedError):
     pass
 
 
-@zope.interface.implementer(IPublishTraverse)
 class simple(zope.publisher.browser.BrowserView):
 
-    def publishTraverse(self, request, name):
-        try:
-            return guarded_getattr(self, name)
-        except Unauthorized:
-            # attribute exists but is not published, so hide it from access:
-            raise AttributeError(name)
-
     # __call__ should have the same signature as the original method
     @property
     def __call__(self):
@@ -467,6 +459,23 @@ def __call__(self):
         return getattr(self, attr)
 
 
+@zope.interface.implementer(IPublishTraverse)
+@zope.component.adapter(simple, IBrowserRequest)
+class SimplePublishTraverse(object):
+    """Default PublishTraverse implementation attributes of class `simple`."""
+
+    def __init__(self, context, request):
+        self.context = context
+        self.request = request
+
+    def publishTraverse(self, request, name):
+        try:
+            return guarded_getattr(self.context, name)
+        except Unauthorized:
+            # attribute exists but is not published, so hide it from access:
+            raise AttributeError(name)
+
+
 class ViewMixinForTemplates(zope.browserpage.simpleviewclass.simple):
 
     def __getitem__(self, name):

src/Products/Five/browser/tests/pages.txt

@@ -234,11 +234,12 @@ Other attributes are private:
   >>> aq_acquire(view, 'mouse__roles__') is ACCESS_PRIVATE
   True
 
-In zope.browserpage this is just protected with the specified permission. Not
-sure if this has to be private in Zope 2:
+A view does not have a ``publishTraverse`` method, traversal to attributes
+of the view is done via an adapter.
 
-  >>> aq_acquire(view, 'publishTraverse__roles__') is ACCESS_PRIVATE
-  True
+  >>> aq_acquire(view, 'publishTraverse')
+  Traceback (most recent call last):
+  AttributeError: 'RequestContainer' object has no attribute 'publishTraverse'
 
 Check to see if view's context properly acquires its true
 parent

src/Products/Five/browser/tests/test_pages.py

@@ -92,11 +92,6 @@ def test_publishTraverse_to_allowed_name():
     >>> 'The eagle has landed' in result
     True
 
-    Publishing traversal also works directly:
-
-    >>> view.publishTraverse(request, 'eagle')() == 'The eagle has landed'
-    True
-
     Clean up:
 
     >>> from zope.component.testing import tearDown