Re: Add/Remove fields in ModelForm in Admin site

Finally , I got it.

class ItemForm(ModelForm):
item = forms.CharField(label='Item')
class Meta:
model=Item

def __init__(self, *args, **kwargs):
super(ItemForm, self).__init__(*args, **kwargs)
if kwargs.has_key('instance'):
del self.fields['item']
del self.base_fields['item']
else:
self.fields['item'] = forms.CharField(label='Item')
self.base_fields['item'] = forms.CharField(label='Item')

On 1 fev, 19:13, andmart <andm...@gmail.com> wrote:
> There is an error in code above.
>
> I forgot to write to message the call to super.
>
> Here is the code I'm  trying to work
>
> http://dpaste.com/375663/
>
> Thanks in advance for any help
>
> On 1 fev, 17:48, andmart <andm...@gmail.com> wrote:
>
> > Hi all,
>
> > I'm trying to remove or add fields based in presence of 'instance'
> > parameter in ModelForm __init__ like this:
>
> > class ItemForm(ModelForm):
> >        class Meta:
> >               model = Item
>
> >         def __init__(self, *args, **kwargs):
> >                if not kwargs.has_key('instance'):
> >                       self.fields['extra_field'] =
> > forms.CharField(label='Extra Field')
>
> > But debugging, in django/contrib/admin/options.py, in add_view method,
> > django instantiates my modelform and after that forget it.
>
> > I saw many posts googling with solution above - adding fields in
> > self.fields. Am I doing something wrong or is it not possible in
> > django 1.2.3 version?
>
> > Thanks in advance.

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