On Wed, Jun 3, 2009 at 5:12 PM, justind <justin.don...@gmail.com> wrote:

>
> Hello,
>
> I'm using the following to provide a select box with filtered choices:
>
> class AssetForm(ModelForm):
>    """Asset form takes a project id. It only allows workstreams
> attached to
>    this project name."""
>    workstreams = forms.ModelChoiceField(Workstream, None)
>    def __init__(self, *args, **kwargs):
>        super(AssetForm, self).__init__(*args, **kwargs)
>        if self.instance:
>            self.fields['workstreams'].queryset =
> Workstream.objects.filter(project__id=args[0])
>            self.fields['workstreams'].widget.choices =
> self.base_fields['workstreams'].choices
>
> I instantiate it
>
> f = AssetForm(1) # 1 is the number of a project, which I filter with.
>
> It seems to work, and I can poke around at the fields and choices.
>
> but when I try to render it:
>
> f.as_p()
>
> I get:
>
> Traceback (most recent call last):
>  File "<console>", line 1, in <module>
>  File "django\django\forms\forms.py", line 191, in as_p
>    return self._html_output(u'<p>%(label)s %(field)s%(help_text)s</
> p>', u'%s',
> '</p>', u' %s', True)
>  File "django\django\forms\forms.py", line 139, in _html_output
>    top_errors = self.non_field_errors() # Errors that should be
> displayed above
>  all fields.
>  File "django\django\forms\forms.py", line 199, in non_field_errors
>    return self.errors.get(NON_FIELD_ERRORS, self.error_class())
>  File "django\djang
> o\forms\forms.py", line 111, in _get_errors
>    self.full_clean()
>  File "django\django\forms\forms.py", line 218, in full_clean
>    value = field.widget.value_from_datadict(self.data, self.files,
> self.add_pre
> fix(name))
>  File "django\django\forms\widgets.py", line 170, in
> value_from_datadict
>    return data.get(name, None)
> AttributeError: 'int' object has no attribute 'get'
>
>
> Any ideas?
>
> Thanks,
> Justin
>
> >
>
You need to remove the 1 from args before instantiating the Form, so
something like:

def __init__(self, *args, **kwargs):
   id = args[0]
   args = args[1:]
   etc...

Otherwise django thinks 1 is the first argument which is supposed to be the
data dictionary..

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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