Phil,
Thought an example might help.
class VacationBudgetField(MultiValueField):
def __init__(self, required=True, label=None, widget=None,
initial=None, f_type=(), currency=(), amount=None):
fields = (ChoiceField(choices=f_type),
ChoiceField(choices=currency), IntegerField())
widget = widget or BudgetWidget(f_type=f_type,
currency=currency, amount=amount)
super(VacationBudgetField, self).__init__(fields, required,
widget, label, initial)
def compress(self, data_list):
if data_list:
return " ".join(str(i) for i in data_list)
return None
## Where BuggetWidget is
class BudgetWidget(MultiWidget):
def __init__(self, attrs=None, f_type=(), currency=(),
amount=None):
widgets = (Select(attrs=attrs, choices=f_type),
Select(attrs=attrs, choices=currency), TextInput())
super(BudgetWidget, self).__init__(widgets, attrs)
def decompress(self, value):
if value:
return value.split(' ', 2)
return ['', '', '']
## Used it like so...
budget = VacationBudgetField(f_type=[('a', 'a'), ('b', 'b')],
currency=[('d', 'd'), ('e', 'e')])
Hope that helps.
On Feb 6, 4:51 pm, "canen" <[EMAIL PROTECTED]> wrote:
> Phil,
>
> I think you must subclass it and define the compress method. See the
> comments herehttp://code.djangoproject.com/browser/django/trunk/
> django/newforms/fields.py#L412. You will also need a MultiWidget to
> go with the field.
>
> On Feb 6, 10:04 am, "Phil Powell" <[EMAIL PROTECTED]> wrote:
>
> > Hi,
>
> > Can anyone provide any pointers on how I use MultiValueField? Can I
> > use it straight out of the box, or do I have to subclass to create a
> > new field and a new MultiValueWidget?
>
> > I thought that this code would just work:
>
> > postcode = forms.MultiValueField(fields=(forms.CharField(max_length=4),
> > forms.CharField(max_length=4)))
>
> > But all I ever get rendered in my template (using {{ form.postcode }})
> > is a single text input.
>
> > Any advice would be much appreciated.
>
> > -Phil
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