Django how to render ModelForm field as Multiple choice

Question

I have a model form like this:

from django.forms import widgets

class AdvancedSearchForm(forms.ModelForm):

    class Meta:
        model= UserProfile
        fields = ( 'name', 'location', 'options')

Where 'options' is a list of tuples and is automatically rendered in template as drop down menu. However I want users to be able to choose multiple options in the search form.

I know I need to add a widget to the form class as I looked at the docs and it seems to me that it needs to be something like this to the class:

widgets = {
    'options':  ModelChoiceField(**kwargs)
} 

However I get this error

name 'MultipleChoiceField' is not defined

So Finally could not figure out how exactly to implement that. So appreciate your help.

Answer 1

ModelChoiceField is not a widget, it's a form field, but to use multiple version of it, you need to override field:

class AdvancedSearchForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(AdvancedSearchForm, self).__init__(*args, **kwargs)
        self.fields['options'].empty_label = None

    class Meta:
        model= UserProfile
        fields = ( 'name', 'location', 'options')

then to override the widget to checkboxes, use CheckboxSelectMultiple

widgets = {
    'options':  forms.CheckboxSelectMultiple()
}