On Jun 16, 10:30 am, DevelopsDjangoApps <mom...@gmail.com> wrote:
> Hi,
>
> I have created a form class like this:
>
> class VoteRadioForm(forms.Form):
>
> choices =
> forms.ModelChoiceField(queryset=Choice.objects.filter(poll__active=
> True, poll__id = 2),
> empty_label= None,
> widget= forms.RadioSelect,
> )
>
> This class gives me dynamic number of entries for my form, based on
> the poll_id. But as you may have already seen it, the poll__id is
> hardcoded in this example. In order to pass different values to
> poll__id, I tried to generated my choices element inside the __init__
> method like this:
>
> #choices =
> forms.ModelChoiceField(queryset=Choice.objects.filter(poll__active=
> True, poll__id = 2),
> def __init__(self, pid = None, *args, **kwargs):
> super(VoteRadioForm, self).__init__()
> self.fields['ch'] =
> forms.ModelChoiceField(queryset=Choice.objects.filter(poll__active=
> True, poll__id = pid),
> empty_label= None,
> widget= forms.RadioSelect,
> )
>
> The first example(Hardcoded version) works perfectly fine. The second
> example generates the form correctly, when I use:
>
> form = VoteRadioForm(i)
>
> However, when I try to validate the data and pass the request object
> to it, it gives me the following error:
>
> int() argument must be a string or a number, not 'QueryDict'
>
> I even tried to add *args and **kwargs arguments when initializing my
> class, just like this example:
>
> http://www.b-list.org/weblog/2008/nov/09/dynamic-forms/
>
> But, it doesn't make any difference.
>
> I'm having Pythong 2.6.5 on my Arch Linux machine.
>
> I was wondering if anyone has ever had such problem?
>
> Thanks in advance
It's because your 'pid' parameter is grabbing the first argument to
the function, which is usually the posted data.
Instead, do this:
def __init__(self, *args, **kwargs):
pid = kwargs.pop('pid', None)
super(VoteRadioForm, self).__init__(*args, **kwargs)
...etc...
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