I have a form with a choice field that is using CheckboxSelectMultiple widget:
foo = forms.ChoiceField(widget=forms.CheckboxSelectMultiple,
May this helpful for you
num_choices = ( ("1", "ONE"), ("2", "TWO"), ("3", "Three"), ("4", "Four"))
num_list = forms.MultipleChoiceField(choices=num_choices, required=True, widget=forms.CheckboxSelectMultiple(), label='Select No', initial=("1", "2"))
If you want to pass the ORM object directly, then you can try the following
num_list = forms.ModelMultipleChoiceField(Numbers.objects.all(), required=True, widget=forms.CheckboxSelectMultiple(), label='Select No')