how to change form variable values from view

Question

i've been trying to send data to the following form from my view.

i need the variable (choices ) to change each time we call this form

class AnswersForm(forms.Form):



question  = forms.RadioSelect
CHOICES=[('sf','asdf')]
radioButton = forms.ChoiceField(choices=CHOICES, widget=forms.RadioSelect())

view.py :

def exam_attend(request,ExamName,questionNo=0):



if ExamName:
    myList = [('b','a')]       
    forms.AnswersForm.CHOICES=myList
    form = forms.AnswersForm()

  variabls = RequestContext(request,{'form':form})
  return render_to_response('exam_pageAttend.html',variabls)

the problem is : i need the variable (CHOICES) from the form class to change it's value in the view class ( i know i can just use CHOICES = [('b','a')] ) but i want to change it from the view since this code is only to show the problem )

any better ideas ?

thanks in advance

First, please format your code correctly. It needs to be indented like real Python so we can read it. Second, why is CHOICES defined inside the Form class? — S.Lott
– S.Lott, Commented May 6, 2011 at 10:22

Tommaso Barbugli · Accepted Answer · 2011-05-06 10:56:43Z

2

You can change the field choices overriding the form init method (so that it accepts a choice parameter) or you can change the field's choices after the init, depending on your needs.

First Case would be like this:

class AnswersForm(forms.Form):
    radioButton = forms.ChoiceField(choices=CHOICES, widget=forms.RadioSelect())

    def __init__(self, radio_choices= None, *args, **kwargs):
        super(AnswersForm, self).__init__(self, *args, **kwargs)
        if radio_choices is not None:
            self.fields['radioButton'].choices = radio_choices

View example:

form_instance = AnswersForm(new_choices)

answered May 6, 2011 at 10:56

Tommaso Barbugli

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