ContentProviderLookupError: plone.htmlhead

UPDATE: jjmojojjmojo was kind enough to write a test for this bug, so hopefully the patch will show up in the next release.  See the bug if you would like the doctest.

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I have a BrowserView on an Archetypes type that I created. When I try to go to the view, I get the error ContentProviderLookupError: plone.htmlhead.

I found a bug report at https://bugs.launchpad.net/zope2/+bug/176566 There is a patch suggested there, but it looks like the patch may not be applied without a unit test. I have yet to be able to figure out how to test views, and I don’t like the idea of altering my Zope code. So, I wrote a monkey patch on my view that takes care of this.

view.py

from Products.Five.browser import BrowserView
from Products.Five.browser.pagetemplatefile import ZopeTwoPageTemplateFile

def _getContext(self):
    while 1:
        self = self.aq_parent
        if not getattr(self, '_is_wrapperish', None):
            return self

class MyView(BrowserView):
    def __init__(self, context, request):
        self.context = context
        self.request = request
        #Monkey patch for weird error
        ZopeTwoPageTemplateFile._getContext = _getContext

~ by Liz on January 8, 2008.