Re: How to implement chained/related dropdown lists in a page

I haven't done it much, but, yeah, ajax is probably best. Maybe something like might work:

$('#id_category').change(function(){
    var category = $(this).val()  // not sure about this. the point is, get the selected id.
    $.get('/subcategory-options/?category=' + encodeURIComponent(category), function(data){
        $('#id_subcategory').replaceWith(data)
    })
})

urls.py:

    url(r'^subcategory-options/$', views.subcategory_options),

views.py:

def subcategory_options(request):
    subcategories = SubCategory.objects.filter(category=request.GET['category'])
    class TempForm(forms.Form):
        field = forms.ModelChoiceField(queryset=subcategories)
    form = TempForm()
    return render(request, 'subcategory_options.html', {'form': form})

subcategory_options.html:

{{ form }}

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