Ruby on Rails:获取媒体播放器信息(iTunes，TRAKTOR，Cog；当前歌曲和播放列表) [英] Ruby on Rails: Get mediaplayer information (iTunes, TRAKTOR, Cog; current song + playlist)

问题描述

我想编写一个小型的Web应用程序来完成以下任务:

I want to write a small web app which does this things:

• 提供一个网页以显示当前歌曲和一些元数据
• 提供一个网络api，可以查询下首歌曲以允许页面更新而无需页面加载

没什么大不了的，我唯一无法估计的部分是是否可以访问 iTunes ， TRAKTOR ，并在可能的情况下使用 Cog 从ruby on rails应用程序中获得.

No big deal, the only part I can't estimate is if it's possible to access the current song of iTunes, TRAKTOR and if possible Cog from a ruby on rails application.

如果我也可以访问播放列表以显示下一首歌曲，那将特别好.

It would be especially nice if I can access the playlist, too to display the following song, too.

推荐答案

我将通过命令行使用applescript.我没有Traktor Pro或Coq，但是您可以通过OS X的脚本编辑器中的AppleScript词典查看器查看哪些对象可用.对于iTu​​nes，命令为:

I would use applescript via the command-line. I don't have Traktor Pro or Coq, but you can look at what objects are available via the AppleScript Dictionary viewer in OS X's Script Editor. For iTunes, the command would be:

osascript -e 'tell application "iTunes" to get name of current track'
osascript -e 'tell application "iTunes" to get name of every track of current playlist'

您可以从Rails应用程序(需要以您的用户帐户运行)执行命令，如下所示:

You would execute the command from your rails app (which would need to be running as your user account) like this:

def show
    @current_track = `osascript -e 'tell application "iTunes" to get name of current track'`
end

...

<h1>The current track is: <%= @current_track -%></h1>

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