BackboneJS Youtube播放器不发射视频

Question

我有这个骨干应用程序，我想在一个视图中显示youtube视频。我通过API和模型动态地获取youtube视频id。到目前为止一切顺利。Youtube播放器得到渲染，但播放器给了我一个错误，表明它没有识别VideoID，即使当我console.log的video_id，它返回正确的video_id。

所以我的视图是这样的:

beforeRender: function() {
    var artistvideosModel = new ArtistVideos.ArtistVideosModel();
    artistvideosModel.artist_id = this.artist_id;
    artistvideosModel.video_youtube_id = this.video_youtube_id;
    artistvideosModel.fetch();
},
afterRender: function() {
  var tag = document.createElement('script');
  tag.src = "https://www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
  var player;
  window.onYouTubeIframeAPIReady = function() {
    player = new YT.Player('vid', {
      height: '390',
      width: '640',
      videoId: this.video_youtube_id,
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }
  function onPlayerReady(event) {
    event.target.playVideo();
  }
  var done = false;
  function onPlayerStateChange(event) {
    if (event.data == YT.PlayerState.PLAYING && !done) {
      setTimeout(stopVideo, 6000);
      done = true;
    }
  }
  function stopVideo() {
    player.stopVideo();
  }
}

有人知道这里可能有什么问题吗?请帮助…

Thanks in advance

Answer 1

您需要绑定上下文:

window.onYouTubeIframeAPIReady = _.bind(function() {
  player = new YT.Player('vid', {
    height: '390',
    width: '640',
    videoId: this.video_youtube_id,
    events: {
      onReady: onPlayerReady,
      onStateChange: onPlayerStateChange
    }
 })
}, this);