public function delete($form_params = [], $button_label = 'x', $button_options = [], $hiddenFields = [])
    {
        $form_params['method'] = 'delete';
        $form_params['class'] = isset($form_params['class']) ? $form_params['class'] : 'del-form pull-right float-right';
        if (isset($form_params['onsubmit'])) {
            if ($form_params['onsubmit'] != false) {
                $form_params['onsubmit'] = $form_params['onsubmit'];
            }
        } else {
            $form_params['onsubmit'] = 'Are you sure to delete this?';
        }

        if (!isset($button_options['title'])) {
            $button_options['title'] = 'Delete this item';
        }

        return $this->formButton($form_params, $button_label, $button_options, $hiddenFields);
    }