I use the following code that I got from a django snippet, which works
great if you want to have radio buttons with different types of fields
associated with them
from django import forms
from django.utils.encoding import force_unicode
class ChoiceWithOtherRenderer(forms.RadioSelect.renderer):
def __init__(self, *args, **kwargs):
super(ChoiceWithOtherRenderer, self).__init__(*args, **kwargs)
def __iter__(self):
for inp in self.choices:
id = '%s_%s' % (self.attrs['id'], inp[0]) if 'id' in
self.attrs
else ''
label_for = ' for="%s"' % id if id else ''
checked = '' if not force_unicode(inp[0]) == self.value
else
'checked="true" '
html = '<label%s><input type="radio" id="%s" value="%s"
name="%s"
%s/> %s</label> %%s' % \
(label_for, id, inp[0], self.name, checked, inp[1])
yield html
class ChoiceWithOtherWidget(forms.MultiWidget):
def __init__(self, choices):
widgets = [forms.RadioSelect(choices=choices,
renderer=ChoiceWithOtherRenderer),]
for choice in choices:
widgets.append(choice[2])
super(ChoiceWithOtherWidget, self).__init__(widgets)
def decompress(self, value):
if not value:
return [None, None]
return value
def format_output(self, rendered_widgets):
render = []
for widget in rendered_widgets[1:]:
render.append(widget)
render = tuple(render)
return rendered_widgets[0] % render
class ChoiceWithOtherField(forms.MultiValueField):
def __init__(self, *args, **kwargs):
fields = [
forms.ChoiceField(widget=forms.RadioSelect(renderer=ChoiceWithOtherRenderer),
*args, **kwargs),
]
widget = ChoiceWithOtherWidget(choices=kwargs['choices'])
kwargs.pop('choices')
self._was_required = kwargs.pop('required', True)
kwargs['required'] = False
super(ChoiceWithOtherField, self).__init__(widget=widget,
fields=fields, *args, **kwargs)
def compress(self, value):
if self._was_required and not value or value[0] in (None, ''):
raise
forms.ValidationError(self.error_messages['required'])
if not value:
return [None, u'']
return (value[0], value[1] if force_unicode(value[0]) ==
force_unicode(self.fields[0].choices[-1][0]) else u'')
So in forms.py I create a form something like this.
BUDGET_CHOICES = [('Budget' , 'Budget', forms.TextInput() ),
('No Budget', 'No Budget', forms.RadioSelect )
]
class PaymentForm(forms.Form):
budget = ChoiceWithOtherField ( choices =
BUDGET_CHOICES )
This works great, until I created a FormsView class
class Payment( FormView ):
template_name = 'leadb/lb_payment.html'
form_class = PaymentForm
def form_valid(self, form):
"""
then I got
Exception Type: ValueError
Exception Value:
too many values to unpack
Exception Location: C:\Python27\lib\site-packages\django-1.3.1-
py2.7.egg\django\forms\fields.py in valid_value, line 680
I am passing three choices and it expects 2. I am trying to figure out
how to get around this. Any advice appreciated.
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