如何动态初始化文件上传？

Question

如何在点击后以动态方式初始化此对象并将其绑定到模板中？

$scope.send = function(){

var setting = {};

var uploader = new FileUploader({
                    url: settings.path,
                    alias: settings.alias,
                    formData: settings.data,
                    autoUpload: true,
                    queueLimit: settings.limit
                });

}

对象uploader将在模板中可用：

<div class="attachements" nv-file-drop="" uploader="uploader"></div>

现在，在加载页面后我收到错误，应该定义uploader：

  

TypeError：“Uploader”必须是FileUploader的实例