创建YouTube AngularJS指令

Question

我创建了以下AngularJS指令来嵌入youtube视频:

// A Simple youtube embed directive
.directive('youtube', function() {
  return {
    restrict: 'EA',
    scope: { code:'=' },
    replace: true,
    template: '<div style="height:400px;"><iframe style="overflow:hidden;height:100%;width:100%" width="100%" height="100%" src="http://www.youtube.com/embed/{{code}}" frameborder="0" allowfullscreen></iframe>'
  };
});

当我从模板中调用它时<youtube code="r1TK_crUbBY"></youtube>,出现以下错误:

错误:[$ interpolate:noconcat]插值时出错:http://www.youtube.com/embed/ {{code}} Strict Contextual Escaping禁止在需要可信值时连接多个表达式的插值.见http://docs.angularjs.org/api/ng.$ sce

我无法确定{{code}}表达式中的指令有什么问题.

Answer 1

具有角1.2,你需要注入$sce的服务和trustAsResourceURL对src的iframe.

演示:http://plnkr.co/edit/0N728e9SAtXg3uBvuXKF？p = preview

.directive('youtube', function($sce) {
  return {
    restrict: 'EA',
    scope: { code:'=' },
    replace: true,
    template: '<div style="height:400px;"><iframe style="overflow:hidden;height:100%;width:100%" width="100%" height="100%" src="{{url}}" frameborder="0" allowfullscreen></iframe></div>',
    link: function (scope) {
        scope.$watch('code', function (newVal) {
           if (newVal) {
               scope.url = $sce.trustAsResourceUrl("http://www.youtube.com/embed/" + newVal);
           }
        });
    }
  };
});

另请参阅:从1.0迁移到1.2以及相关问题.