Question

So CoffeeScript has shipped with Rails since 3.1? Fantastic! I’m getting into the syntax. I like simplicity.

And yet, I can’t seem to figure out how to include it on my site. I’ve tried including it between and that didn’t work.

I have one .erb file I want this to be in, new.html.erb (obviously, this is a Rails app):

<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>​

And it doesn’t show up at all. Ideas?

Answer 1

If you have CoffeeScript enabled, Rails will generate a .js.coffee file for each of your controllers in app/assets/javascripts. That’s where your CoffeeScript belongs, and you don’t need to include script tags.

Read more in the guide: http://guides.rubyonrails.org/asset_pipeline.html