On Sep 2, 6:10 pm, cArkraus <[EMAIL PROTECTED]> wrote:
> Hey everyone,
>
> am pretty new to Django and Python in general.
> I seem not be able to let the 'initial' value of a form-field be
> calculated by its parent form.
>
> I'd like to do sth like this:
>
> class AbstractForm(forms.Form):
> some_attr = "foo"
>
> def some_method(self):
> if self.some_attr == "foo": return "foo"
> return "Something else..."
>
> some_field = forms.CharField(initial=self.some_method())
>
> ..but obviously I cant access 'self' when declaring some_field.. and
> obviously I have yet to learn a lot about Python oop :)
>
> Fyi. I do not want to initiate form defaults like
> f = MyForm(initial=...) in my views since I'd have to repeat that in
> each view.
>
> I'd rather do things like this lateron:
> class ConcreteForm(AbstractForm):
> some_attr = "bar"
>
> Somebody willing to enlighten me?
>
> Thx a lot & cheers
> carsten
I'm not sure I really understand what you want to do here, but I think
the best thing would be for you to override the __init__() method.
class AbstractForm(forms.Form):
def __init__(self, *args, **kwargs):
super(AbstractForm, self).__init__(*args, **kwargs)
self.fields['some_field'].initial = self.some_method()
If you need an __init__ in the child form as well, don't forget to
call super(ConcreteForm, self).__init__() again there.
--
DR.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-users@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en
-~----------~----~----~----~------~----~------~--~---
