Looks like you're almost there. You fixed a couple of problems in the
code I posted.
Can you post more of the error so we know which __init__ is thowing
the exception?
I know it seems complicated, but I'd be surprised if this pattern was
common. I doubt most Form subclasses require extra arguments to
__init__(). A general way to do this might be nice, but could be very
complicated.
Another way to do this would be to create your formset, and then
iterate over formset.forms and set the attributes you need, and then
do what you need with the formset.
-Justin
On Thu, Aug 21, 2008 at 6:42 AM, patrickk <[EMAIL PROTECTED]> wrote:
>
> hehe :-)
>
> doesn´t work when data is posted:
>
> if request.method == 'POST':
> formset = UploadFormSet(path_server=PATH_SERVER, path=path,
> request.POST, request.FILES)
>
> error: __init__() got multiple values for keyword argument 'path'
>
>
> On Aug 21, 2:55 pm, patrickk <[EMAIL PROTECTED]> wrote:
>> got it - passing parameters to formsets. this is just my personal
>> opinion, but in my view it´s overly complicated for such a common
>> thing ... I thought newforms will make things easier (but that was
>> about 4 weeks ago).
>>
>> class BaseUploadFormSet(BaseFormSet):
>>
>> def __init__(self, path_server=None, path=None, **kwargs):
>> self.path_server = path_server
>> self.path = path
>> super(BaseUploadFormSet, self).__init__(**kwargs)
>>
>> def _construct_form(self, i, **kwargs):
>> # this works because BaseFormSet._construct_form() passes
>> **kwargs
>> # to the form's __init__()
>> kwargs["path_server"] = self.path_server
>> kwargs["path"] = self.path
>> return super(BaseUploadFormSet, self)._construct_form(i,
>> **kwargs)
>>
>> class UploadForm(forms.Form):
>>
>> def __init__(self, path_server=None, path=None, *args, **kwargs):
>> self.path_server = path_server
>> self.path = path
>> print self.path_server
>> print self.path
>> super(UploadForm, self).__init__(*args, **kwargs)
>>
>> ...
>> define fields here
>> ...
>>
>> On Aug 21, 2:30 pm, patrickk <[EMAIL PROTECTED]> wrote:
>>
>> > hmm, this is getting funny ...
>>
>> > def _construct_forms(self):
>> > # instantiate all the forms and put them in self.forms
>> > self.forms = []
>> > for i in xrange(self._total_form_count):
>> > self.forms.append(self._construct_form(i))
>> > print self.forms
>>
>> > def _construct_form(self, i, **kwargs):
>> > """
>> > Instantiates and returns the i-th form instance in a formset.
>> > """
>> > defaults = {'auto_id': self.auto_id, 'prefix':
>> > self.add_prefix(i)}
>> > if self.data or self.files:
>> > defaults['data'] = self.data
>> > defaults['files'] = self.files
>> > if self.initial:
>> > try:
>> > defaults['initial'] = self.initial[i]
>> > except IndexError:
>> > pass
>> > # Allow extra forms to be empty.
>> > if i >= self._initial_form_count:
>> > defaults['empty_permitted'] = True
>> > defaults.update(kwargs)
>> > form = self.form(**defaults)
>> > self.add_fields(form, i)
>> > print form
>> > return form
>>
>> > as you can see, I´ve inserted print in _construct_form and
>> > _construct_forms. the print-statement at the end of _construct_form
>> > displays the form, but the print-statement in _construct_forms
>> > displays: [None, None, None, None, None].
>>
>> > On Aug 21, 1:36 pm, patrickk <[EMAIL PROTECTED]> wrote:
>>
>> > > to be more precise:
>> > > when I do "print form" in formsets.py in line 96, at the end of
>> > > _construct_form, the form is there.
>> > > but when trying to display the form(s) in the template, the formset is
>> > > empty ...
>>
>> > > On Aug 21, 12:19 pm, patrickk <[EMAIL PROTECTED]> wrote:
>>
>> > > > thanks justin.
>>
>> > > > I´m able to pass the paramters to the form now. unfortunately, the
>> > > > form (in the template) is empty now ... no fields at all, so I guess
>> > > > there´s something missing here (but I don´t know what).
>>
>> > > > On Aug 21, 11:34 am, "Justin Fagnani" <[EMAIL PROTECTED]>
>> > > > wrote:
>>
>> > > > > On Thu, Aug 21, 2008 at 12:30 AM, patrickk <[EMAIL PROTECTED]> wrote:
>>
>> > > > > > I´m not sure (anymore) we´re all talking about the same issue.
>>
>> > > > > I think we are. I'll see if I can clarify... The broad idea is that
>> > > > > you pass the parameters to the formset in your view via an overridden
>> > > > > __init__(), then you pass them to the form via an overridden
>> > > > > _construct_form().
>>
>> > > > > Something like this:
>>
>> > > > > class MyBaseFormSet(BaseFormSet):
>> > > > > def __init__(self, foo=None, **kwargs):
>> > > > > self.foo = foo
>> > > > > super(BaseFormSet, self).__init__(**kwargs)
>>
>> > > > > def _construct_form(self, i, **kwargs):
>> > > > > # this works because BaseFormSet._construct_form() passes
>> > > > > **kwargs
>> > > > > # to the form's __init__()
>> > > > > super(BaseFormSet, self)._construct_form(i, **{'foo': self.foo})
>>
>> > > > > class MyForm(Form):
>> > > > > def __init__(self, foo=None, *args, **kwargs):
>> > > > > self.foo = foo
>> > > > > super(BaseForm, self).__init__(*args, **kwargs)
>>
>> > > > > MyFormSet = formset_factory(MyForm, formset=MyBaseFormSet)
>>
>> > > > > def view_func(request):
>> > > > > formset = MyFormSet(foo='bar')
>> > > > > ...
>>
>> > > > > hope that helps,
>> > > > > Justin
>>
>>
> >
>
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