node js forms (caolan) bootstrap compatible

How can I wrap widgets in forms module? Bootstrap requires the input elements must be wrapped inside a <div class="controls">.

For the label and field classes, I have already acheived the required stracture by

var sport_form = forms.create({
    title: fields.string({required: true
        , widget: widgets.text({classes: ['not_working']})
        , errorAfterField: true
        , cssClasses: {
            label: ['control-label'],
            field: ['control-group'],
        }
    }),
    description: fields.string({errorAfterField: true}),
    date: fields.date({widget: widgets.date(), required: true, errorAfterField: true})
});