Is it it possible to have the Rails Asset Pipeline compile Coffeescript on every request?

Question

I'm building a JS widget using Coffeescript. I'm playing some tricks to get my CSS/SCSS and HTML/HAML templates into the JS widget upon compilation:

# widget.js.coffee.erb
class Widget
  constructor: (options) ->
  @template = <%= Haml::Engine.new(
    File.read(
    File.expand_path("../../templates/widget.html.haml", __FILE__))).
    render.to_json %>

  @css = <%= Sass.compile_file(
    File.expand_path("../../stylesheets/widget.css.scss", __FILE__)).
    to_json  %>

The problem is that when I change the HTML or CSS, Rails is not recompiling the Coffeescript in development because the coffeescript file is not changing. I need to make silly whitespace changes to force it to recompile things. This is getting annoying :-)

Any ideas on how to force the asset pipeline to compile certain files on every request?

Ryan Angilly · Accepted Answer · 2013-07-20 17:30:31Z

3

Got it. Sprockets has a depend_on directive. Adding the following lines to my widget.js.coffee.erb solved it:

# coffee.js.coffee.erb
#= depend_on '../templates/widget.html.haml'
#= depend_on '../stylesheets/widget.css.scss'

class Widget
...

answered Jul 20, 2013 at 17:30

Ryan Angilly

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