Create empty queryset by default in django form fields

django django-forms
TheNone picture TheNone · Jun 28, 2012 · Viewed 81.2k times · Source

I have this fields in form:

city = forms.ModelChoiceField(label="city", queryset=MyCity.objects.all())
district = forms.ModelChoiceField(label="district", queryset=MyDistrict.objects.all())
area = forms.ModelChoiceField(label="area", queryset=MyArea.objects.all())

district comes from click on city and area comes from click on area. With queryset=MyDistrict.objects.all() and queryset=MyArea.objects.all() form will be very heavy. How can I make querysets empty by default?

Answer

marianobianchi picture marianobianchi · Jun 28, 2012

You can have an empty queryset by doing this:

MyModel.objects.none()

Although i don't know how are you going to use that form, you can put that as your field's queryset in order to get what you need...

You can find more information here

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