def METHOD_NAME(self, form_class=None):
    """Return an instance of the form to be used in this view."""
    form = super(FeedbackClass, self).METHOD_NAME(form_class)
    form.helper = FormHelper()
    form.helper.form_id = slugify(self.request.path)
    form.helper.add_input(Submit('submit', _('Submit'), css_class='btn-success btn-block'))
    form.helper.form_class = 'wger-form'
    return form