FB Like按钮仅显示一次 - 在我第一次加载AngularJS视图时

I am trying to place the FB like button on my single page site built on Angular JS. The like button has to be displayed on a view (different than the index.html) displayed by a controller. But the like button shows up only for the first time I load that particular view. The button do not show up if I come back after visiting another view. Below is the code which loads FB SDK in the controller for the view -I am trying to place the FB like button on my s