EmptyModelChoiceField
class EmptyModelChoiceField(forms.ModelChoiceField):
def __init__(self, queryset, manager, *, empty_label="---------",
required=True, widget=None, label=None, initial=None,
help_text='', to_field_name=None, limit_choices_to=None,
blank=False, **kwargs):
super().__init__(queryset=queryset,
empty_label=empty_label,
required=required,
widget=widget,
label=label,