Django admin - dinamically update through ajax choices of a ChoiceField in a ModelForm

[luke lukes]

Hi everyone.

I'm stucking with a ModelForm in the admin. I have two ChoicheField which
are populated with choices in __init__:

self.fields['city'] = forms.ChoiceField(
required=False,
)
self.fields['city'].choices=get_cities_tuple(region_code=region_code)
self.fields['city'].initial = my_initial_city_value

self.fields['zip'] = forms.ChoiceField(
required=False,
)
self.fields['zip'].choices=get_cities_tuple(region_code=region_code,
city_name=city_name)
self.fields['zip'].initial = my_initial_zip_value


now the options of those html select rendered are dinamically updated
through ajax functions.
The problem is that while saving, the selected options is recognized as not
valid cause is not in the initial choices:

Select a valid choice. <my_choiche> is not one of the available choices.

Any idea on how to solve it?

Maybe subclassing the original ChoiceField or the Select widget?

Many thanks
LuKe

[C. Kirby]

If you can, populate the widget with all available choices and then use
your JS/AJAX to limit/hide some?

Post by luke lukes
Hi everyone.
I'm stucking with a ModelForm in the admin. I have two ChoicheField which
self.fields['city'] = forms.ChoiceField(
required=False,
)
self.fields['city'].choices=get_cities_tuple(region_code=region_code)
self.fields['city'].initial = my_initial_city_value
self.fields['zip'] = forms.ChoiceField(
required=False,
)
self.fields['zip'].choices=get_cities_tuple(region_code=region_code,
city_name=city_name)
self.fields['zip'].initial = my_initial_zip_value
now the options of those html select rendered are dinamically updated
through ajax functions.
The problem is that while saving, the selected options is recognized as
Select a valid choice. <my_choiche> is not one of the available choices.
Any idea on how to solve it?
Maybe subclassing the original ChoiceField or the Select widget?
Many thanks
LuKe