[Grok-dev] Values from another document before rendering

[Sebastian Ware]

Is it an addform? In which case maybe you want to use some class  
attributes on your object with defaults.

class MyObj(gork.Model):

     gallery_id = None
     title = None
     whatever = None
     a_crazy_list = None # never set a class level attribute to a list  
or object.

Just on a side note. Are you setting breakpoints and dropping into  
interactive mode during your debugging sessions?

Mvh Sebastian

12 feb 2010 kl. 11.38 skrev Kathy Manwaring:

> Hi Sebastian,
>
> You helped me out with this late last year. Unfortunately, I can't
> currently work out how you get the value of gallery_id on context -  
> in my
> situation, context does not have any attributes, and I need it to  
> (if I
> can).
> Can you please show me the call to the vocabulary as well?
>
> Thanks
>
> Kathy
>
> Sebastian Ware wrote:
>> This is what I do. I have a field defined in an interface:
>>
>>  gallery_id = schema.Choice(title=u"Gallery", vocabulary=u"Published
> NewProductGalleries")
>>
>> The vocabulary looks like this (it is a bit dirty, but it might  
>> help you
> in the right direction):
>>
>>
>> import grok
>> from zope import schema
>> from zope.schema.vocabulary import SimpleVocabulary
>> from boardsportsource import interfaces
>> from boardsportsource import workflow
>> from hurry import query
>>
>> class NewProductGalleriesSource(grok.GlobalUtility):
>>    grok.implements(schema.interfaces.IVocabularyFactory)
>>    grok.name('Published NewProductGalleries')
>>    def __call__(self, context):
>>        terms = self.get_published_galleries(context)
>>        return  SimpleVocabulary(terms)
>>
>>    def get_published_galleries(self, context):
>>        hasItem = []
>>        if hasattr(context, 'gallery_id') and context.gallery_id is  
>> not
> None:
>>            # I allways need to have the current value in my  
>> vocabulary
>>            # or choice widgets won't render.
>>            hasItem.append(context.gallery_id)
>>
>>        # I use hurry.query to find the objects I want to use in
>>        # my vocabulary.
>>        theQuery = query.Eq(('workflow_catalog', 'workflow_state'),
> workflow.PUBLISHED)
>>        theQuery = theQuery & query.Eq(('workflow_catalog',
> 'object_type'), 'new_product_gallery')
>>        dictResult = query.query.Query().searchResults(theQuery)
>>
>>        theList = []
>>        for item in dictResult:
>>            theObj = interfaces.INewProductGallery(item)
>>             
>> theList.append(SimpleVocabulary.createTerm(theObj.__name__,
> theObj.__name__, '%s (%s)' % (theObj.title, 'default')))
>>            if theObj.__name__ in hasItem:
>>                hasItem.remove(theObj.__name__)
>>
>>        for key in hasItem:
>>            # If the current value wasn't found in the search I add  
>> it here
>>            # with an appropriate message.
>>            if grok.getSite()['default'].has_key(key):
>>                theObj =
> interfaces.IImageOfTheDayGallery(grok.getSite()['default'][key])
>>                theList.append(SimpleVocabulary.createTerm(key, key,  
>> '%s
> (not published!)' % theObj.title))
>>            else:
>>                theList.append(SimpleVocabulary.createTerm(key, key,  
>> '%s
> has been removed!' % key))
>>        return theList
>>
>> Mvh Sebastian
>
>
>
>