{% if url is not defined or url == null %}
    {% set url = app.request.uri %}
{% endif %}

{% spaceless %}
 {# initialize facebook SDK #}
 <div id="fb-root"></div>
 <script>(function(d, s, id) {
   var js, fjs = d.getElementsByTagName(s)[0];
   if (d.getElementById(id)) return;
   js = d.createElement(s); js.id = id;
   js.src = "//connect.facebook.net/{{locale}}/all.js#xfbml=1";
   fjs.parentNode.insertBefore(js, fjs);
 }(document, 'script', 'facebook-jssdk'));</script>

 <div class="fb-share-button" data-href="{{url}}" data-send="{{send}}" data-layout="{{layout}}" data-width="{{width}}" data-show-faces="{{showFaces}}" data-share="{{share}}"></div>
{% endspaceless %}