ruby-on-rails - 如何在 Rails 中包含 CoffeeScript

Question

所以 CoffeeScript 从 3.1 开始就与 Rails 一起发布了？极好的!我正在学习语法。我喜欢简单。

然而，我似乎无法弄清楚如何将它包含在我的网站上。我试过将它包括在内，但没有用。

我有一个 .erb 文件，new.html.erb(显然，这是一个 Rails 应用程序):

<script type="text/coffeescript">
# Countdown to date script provided by JavaScriptKit.com
# http://www.javascriptkit.com/script/script2/count.shtml

montharray=new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")

countdown(yr,m,d) ->
  today=new Date()
  todayy=today.getYear()

if (todayy < 1000)
  todayy+=1900
  todaym=today.getMonth()
  todayd=today.getDate()
  todaystring=montharray[todaym]+" "+todayd+", "+todayy
  futurestring=montharray[m-1]+" "+d+", "+yr

  difference=(Math.round((Date.parse(futurestring)-Date.parse(todaystring))/(24*60*60*1000))*1)

if (difference==0) and document.write(current)
  elseif (difference>0) document.write("ONLY "+difference+" DAYS LEFT!")

countdown(2012,4,30)

</script>​

而且它根本不显示。想法？

Answer 1

如果启用了 CoffeeScript，Rails 会在 app/assets/javascripts 中为每个 Controller 生成一个 .js.coffee 文件。这就是您的 CoffeeScript 所属的地方，您不需要包含 script 标签。

阅读指南中的更多内容:http://guides.rubyonrails.org/asset_pipeline.html