On 25/01/07, Håkan Johansson <[EMAIL PROTECTED]> wrote:
>
> On 20 jan 2007, at 17:36, [EMAIL PROTECTED] wrote:
> >
> > Håkan Johansson wrote:
> >
> >> While working on a complex form using 'newforms' I had some problem
> >> with 'initial' data.
> >> I have multiple forms using the 'prefix' argument to get different
> >> keys for them.
> >>
> >> As far as I know (*please* correct me if I am wrong) the only way to
> >> set initial data dynamically is to create the fields in __init__.
> >>
> >> Form example ('obj' is object to get initial data from):
> >>>>> import django.newforms as forms
> >>>>> class DaForm(forms.Form):
> >> ... def __init__(self, obj, *args, **kw):
> >> ... super(DaForm, self).__init__(*args, **kw)
> >> ... self.fields['time'] = forms.TimeField
> >> (initial=obj.time)
> >> ... self.fields['name'] = forms.CharField
> >> (initial=obj.name)
> >> ... # etc.
> >>
> >>>>> # No form data as we are viewing the objects.
> >>>>> form1 = DaForm(obj1, prefix='obj1')
> >>>>> form2 = DaForm(obj2, prefix='obj2')
I'm curious about this method. How do you use these forms in your
view? More specifically: how do you validate the request.POST data?
Felix
P.S.
I've come up with some spaghetti code which will create a new form
class for an instance (in a similar way to form_for_instance but using
a custom form). It's not pretty but it allows me to do something like
this:
def add(request, id):
if id is not None:
obj = Obj.objects.get(id)
form = custom_form_for_instance(obj)
else:
form = empty_custom_form()
if request.POST:
new_form = form(request.POST)
if new_form.is_valid():
new_form.save()
# redirect etc
new_form = form()
render_to_response('template.html', {'form': new_form})
Now I'm not particularly happy with how custom_form_for_instance works
but it does and it let's me use the generated form in a similar way to
form_for_instance.
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