Solved, I corrected the __init__ method with this:
def __init__(self, *args, **kwargs):
super(CategoriaForm,self).__init__(*args,**kwargs);
if kwargs.has_key('instance'):
self.fields['parent'].queryset = Categoria.objects.exclude
(parent=kwargs['instance'].id).exclude(id=kwargs['instance'].id)
On Feb 5, 10:11 am, mrsource <mrsou...@gmail.com> wrote:
> Maybe I missing some step:
> I trying to set up the the automatic admin page form to edit a
> category tree builded withtreebeardextension:
> #Model:
> class Categoria(AL_Node,Componente):
> immagine = fields.ImageWithThumbnailsField
> (upload_to=Componente.image_path + 'categorie/',
> thumbnail={'size':
> (100, 60),'options': ['crop', 'upscale'],},
> help_text =
> Componente.image_help_text,
>
> blank=True,default=Componente.noimage_logo)
> parent = models.ForeignKey('self',
> related_name='children_set',
> null=True,
> db_index=True)
> node_order_by = ['data_creazione']
> class Meta:
> verbose_name = 'Categoria'
> verbose_name_plural = 'Categorie'
>
> but the I would exclude some elements from the foreign key choice
> widget as itself object id and its descendants:
> First I tried this to exclude the element that I editing:
>
> #admin.py
> class CategoriaForm(forms.ModelForm):
> class Meta:
> model = Categoria
> def __init__(self, *args, **kwargs):
> super(CategoriaForm,self).__init__(self, *args, **kwargs);
> self.fields['parent'].queryset = Categoria.objects.filter
> ('id'<>kwargs['instance'].id)
>
> but I get this error in the Categoria admin editing page:
>
> Exception Type: TypeError
> Exception Value: 'bool' object is not iterable
> Exception Location: D:\codice\workspace\django\django\db\models\sql
> \query.py in add_filter, line 1101
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