avz/priv/facebook_sdk.dtl

<script>
window.fbAsyncInit = function() {
  FB.init({appId: '{{appid}}',cookie: true,status: true,xfbml: false,version: 'v2.8'});

  FB.getLoginStatus(function(response) {
    var inIframe= top!=self;
    if(inIframe && response.status == 'connected' && fbLogin)
      FB.api("/me?fields=id,first_name,last_name,email,birthday,cover", function(response){ fbLogin(response);});
  });
};

function fb_login(){
  FB.getLoginStatus(function(response){
    if(response.status == 'connected'){
      if(fbLogin) FB.api("/me?fields=id,first_name,last_name,email,birthday,cover", function(response){fbLogin(response);});
    } else FB.login(function(r){
        if(r.authResponse && fbLogin) FB.api("/me?fields=id,first_name,last_name,email,birthday,cover", function(response){fbLogin(response);});
      }, {scope: 'email,user_birthday'});
  });
}

(function(d, s, id){
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) {return;}
  js = d.createElement(s); js.id = id; js.async = true;
  js.src = "//connect.facebook.net/en_US/sdk.js";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>