Ugly hack that works around a "ContentProviderLookupError: plone.htmlhead" error caused by Zope 2 permissions. See https://bugs.launchpad.net/zope2/+bug/176566 for further details. This error occured on Plone 3.3.x only.

svn path=/plone.app.discussion/trunk/; revision=33275

plone/app/discussion/browser/moderation.py

@@ -2,6 +2,7 @@ from Acquisition import aq_inner, aq_parent
 
 from Products.Five.browser import BrowserView
 from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
+from Products.Five.browser.pagetemplatefile import ZopeTwoPageTemplateFile
 
 from Products.CMFCore.utils import getToolByName
 
@@ -11,6 +12,23 @@ from Products.statusmessages.interfaces import IStatusMessage
 
 from plone.app.discussion.interfaces import IComment
 
+# Begin ugly hack. It works around a ContentProviderLookupError: plone.htmlhead error caused by Zope 2 permissions.
+# This error occured on Plone 3.3.x only!
+#
+# Source: http://athenageek.wordpress.com/2008/01/08/contentproviderlookuperror-plonehtmlhead/
+# Bug report: https://bugs.launchpad.net/zope2/+bug/176566
+#
+
+def _getContext(self):
+    self = self.aq_parent
+    while getattr(self, '_is_wrapperish', None):
+        self = self.aq_parent
+    return self    
+            
+ZopeTwoPageTemplateFile._getContext = _getContext
+# End ugly hack.
+
+
 class View(BrowserView):
     """Moderation View
     """

plone/app/discussion/tests/test_moderation_view.py

@@ -42,6 +42,7 @@ class ModerationViewTest(PloneTestCase):
         request = self.app.REQUEST
         context = getattr(self.portal, 'doc1')
         self.view = View(context, request)
+        self.view.__of__(context)
         self.portal.portal_workflow.setChainForPortalTypes(
             ('Discussion Item',), 'comment_review_workflow')
         self.wf_tool = self.portal.portal_workflow