gistfile1.php

public function panelStart()
    {
        Form::macro('panel_start', function ($title = '') {
            return '<div class="panel panel-default">
                        <div class="panel-heading bg-white">
                            <span class="font-bold">' . $title . '</span>
                        </div>
                    <div class="panel-body">';
        });
    }

    public function panelEnd()
    {
        Form::macro('panel_end', function ($submit_label = '') {
            if (!$submit_label) {
                return '';
            }
            $result = '</div><footer class="panel-footer">
                            <button type="submit" class="btn btn-info">' . $submit_label . '</button>
                        </footer></div>';
            return $result;
        });
    }