On Thu, Jun 11, 2009 at 12:13 PM, Bobby Roberts <tchend...@gmail.com> wrote:
>
> hi group....
>
> i'm trying to create a drop box that is populated with a distinct list
> of values from a certain field (fieldname=page_plaque) in the table.
> Here is what i have in my forms.py
>
>
> class PagePlaqueModelChoiceField (forms.ModelChoiceField):
> def label_from_instance(self,obj):
> return obj.page_plaque
>
> page_plaque = PagePlaqueModelChoiceField
> (queryset=WebPage.objects.filter(page_plaque!=''),
> empty_label='Choose',required=False, widget=forms.Select(attrs=
> {'class':'dropbox'}))
>
>
>
> this is not working and errors out with:
>
> 'bool' object is not iterable
>
>
> Is this possible and if so what am i doing wrong? Can I pull a
> DISTINCT list of values for that field?
>
>
> >
>
The issue is the line: WebPage.objects.filter(page_plaque!=''). The
queryset syntax doens't use the != operator anywhere. To do != operations
you need to instead do WebPage.objects.exclude(page_plaque='').
Alex
--
"I disapprove of what you say, but I will defend to the death your right to
say it." --Voltaire
"The people's good is the highest law."--Cicero
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