{% if object.category %}
    <a target = "_blank"
       href="{{ url('faq', {'categorySlug': object.category.getSlug, 'questionSlug' : object.getSlug }) }}"
       class="btn btn-sm btn-default"
       title="{{ 'Preview'|trans({}, 'SonataAdminBundle') }}"
    >
        <i class="fa fa-external-link"></i>
        {{ 'Preview'|trans({}, 'SonataAdminBundle') }}
    </a>
{% endif %}