Custom label for ModelChoicesField in django framework

forms.py

class SimpleProjectModelChoicesField(ModelChoiceField):
    def label_from_instance(self, obj):
        return '{name}'.format(name=obj.name)


class CourseForm(ModelForm):
    project = SimpleProjectModelChoicesField(queryset=Project.objects.filter(is_active=True))

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop("request")
        if 'project_id' in kwargs:
            self.project_id = kwargs.pop("project_id")
            if self.project_id is not None:
                kwargs['initial'] = {'project': self.project_id}
        super(CourseForm, self).__init__(*args, **kwargs)
        self.fields['type'].widget.attrs.update({'class': 'form-control'})
        self.fields['project'].widget.attrs.update({'class': 'form-control'})