Working Ninja
Filtering a Prepopulated ModelForm QuerySet in Django

By default, a ModelForm is populated with all its objects from the database. Sometimes it's desirable to limit these results as they are returned to the view. After setting up our ModelForm ( there is only one thing we need to do to make this happen. Within our view (, we update the queryset as follows:

class PollForm(ModelForm):
    class Meta:
        model = Poll
        fields = ('question',)

form = PollForm()
form.fields['question'].queryset = Poll.objects.filter(question__startswith="How")

This will filter Polls that start with "How".