[Grok-dev] registering vocabulary

[Paolo Piersanti]

On 04/13/2011 06:29 PM, Christian Klinger wrote:
> Hi Paolo,
>
> can you paste the traceback of the error.
>
> And how you registerd the utility?

Hi Christian

I registered the vocabulary as
  grok.global_utility(WidgetTypeVocabulary,name=u"widget_type_vocabulary")
and it works fine when I do
getUtility(WidgetTypeVocabulary, name=u"widget_type_vocabulary")
I can get my utility.
The utility is implemented in this way:

class WidgetTypeVocabulary(object):
     grok.implements(IVocabularyFactory)
     def __call__(self, context):
         values = (....)
         return SimpleVocabulary.fromItems(values)

I also use it in a form interface as
class IStatement(interface.Interface):
     widget_type = schema.Choice(title=_(u"Widget Type"),
                                 description=_(u"Widget Type"),
                                 vocabulary=u'widget_type_vocabulary',
                                 required=True)

but here the exception is triggered when the grok machinery
try to instantiate the form involved in the add or edit actions
here is the traceback:

> Traceback (most recent call last):
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.publisher-3.12.6-py2.6.egg/zope/publisher/publish.py", line 132, in publish
>     result = publication.callObject(request, obj)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/grokcore.view-2.5-py2.6.egg/grokcore/view/publication.py", line 56, in callObject
>     return super(ZopePublicationSansProxy, self).callObject(request, ob)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.app.publication-3.13.1-py2.6.egg/zope/app/publication/zopepublication.py", line 207, in callObject
>     return mapply(ob, request.getPositionalArguments(), request)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.publisher-3.12.6-py2.6.egg/zope/publisher/publish.py", line 107, in mapply
>     return debug_call(obj, args)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.publisher-3.12.6-py2.6.egg/zope/publisher/publish.py", line 113, in debug_call
>     return obj(*args)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/grokcore.formlib-1.8-py2.6.egg/grokcore/formlib/components.py", line 90, in __call__
>     self.update_form()
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/grokcore.formlib-1.8-py2.6.egg/grokcore/formlib/components.py", line 62, in update_form
>     super(GrokForm, self).update()
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.formlib-4.0.5-py2.6.egg/zope/formlib/form.py", line 758, in update
>     self.setUpWidgets()
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.formlib-4.0.5-py2.6.egg/zope/formlib/form.py", line 833, in setUpWidgets
>     adapters=self.adapters, ignore_request=ignore_request
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.formlib-4.0.5-py2.6.egg/zope/formlib/form.py", line 388, in setUpEditWidgets
>     field = field.bind(adapter)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.schema-3.7.1-py2.6.egg/zope/schema/_field.py", line 291, in bind
>     clone.vocabulary = vr.get(object, self.vocabularyName)
>   File "/home/gon/src/crm_campaign_env/crm_campaign/eggs/zope.schema-3.7.1-py2.6.egg/zope/schema/vocabulary.py", line 166, in get
>     raise VocabularyRegistryError(name)
> VocabularyRegistryError: unknown vocabulary: u'widget_type_vocabulary'

Inspectioning the vocabulary registry with pdb results in a failing
lookup.
Registering the vocabulary in this way:

 >from zope.schema.vocabulary import getVocabularyRegistry
 >getVocabularyRegistry().register(u'widget_type_vocabulary', 
                         > 
WidgetTypeVocabulary())
everything is ok.

Thank you for your support

Paolo Piersanti


-- 
    Signature for Rent - Questo spazio si affitta
Paolo Piersanti  Software Developer & System Admininistrator

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