On 5 mei, 14:39, "Karen Tracey" <[EMAIL PROTECTED]> wrote:
> On Mon, May 5, 2008 at 7:08 AM, LaundroMat <[EMAIL PROTECTED]> wrote:
> > On 1 mei, 13:43, "Karen Tracey" <[EMAIL PROTECTED]> wrote:
> > > On Thu, May 1, 2008 at 7:22 AM, LaundroMat <[EMAIL PROTECTED]> wrote:
>
> > > > Hi -
>
> > > > Would it be possible to subclass a form class, and in that subclass
> > > > define that one of the fields that were required in the parent class
> > > > are no longer required in the subclass?
>
> > > You mean like this?
>
> > > >>> from django import newforms as forms
> > > >>> class Form1(forms.Form):
>
> > > ... f1 = forms.CharField()
> > > ... f2 = forms.CharField()
> > > ... f3 = forms.CharField()
> > > ...>>> class Form2(forms.Form):
>
> > > ... f1 = forms.CharField(required=False)
> > > ...
>
> > > >>> f1inst = Form1({'f2': 'x', 'f3': 'y'})
> > > >>> f2inst = Form2({'f2': 'x', 'f3': 'y'})
> > > >>> f1inst.is_valid()
> > > False
> > > >>> f2inst.is_valid()
> > > True
>
> > > Karen
>
> > Yes, but I'd like Form2 be a subclass of Form1, so that it also has
> > the f2 and f3 attributes.
>
> Oops, I forgot to base Form2 on Form1. So you mean like this:
>
> >>> from django import newforms as forms
> >>> class Form1(forms.Form):
>
> ... f1 = forms.CharField()
> ... f2 = forms.CharField()
> ... f3 = forms.CharField()
> ...>>> class Form2(Form1):
>
> ... f1 = forms.CharField(required=False)
> ...>>> f1inst = Form1({'f2': 'x', 'f3': 'y'})
> >>> f2inst = Form2({'f2': 'x', 'f3': 'y'})
> >>> f1inst.is_valid()
> False
> >>> f2inst.is_valid()
> True
> >>> f2inst.fields
>
> {'f1': <django.newforms.fields.CharField object at 0x850672c>, 'f2':
> <django.newforms.fields.CharField object at 0x850678c>, 'f3':
> <django.newforms.fields.CharField object at 0x85067cc>}
>
>
>
> which seems to do what you want? Or am I missing something again?
>
> Karen
Dang. There I was, trying to access f2inst's fields by treating them
as if they were attributes (ie f2inst.f1, f2inst.f2 etc), which of
course did not work. Thanks for the help!
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