Sinatra (javascript|stylesheet)_include_tag helper w/ Rakefile tasks

helper.rb

# Assets tag helper
# Uses sprockets in development and local precompiled files in production
def javascript_include_tag(file_name)
  path_prefix = development? ? '/assets/' : '/js/'
  suffix = development? ? '' : "-#{MyProject::VERSION}.min"
  %(<script src="#{path_prefix}#{file_name}#{suffix}.js"></script>)
end

def stylesheet_include_tag(file_name)
  path_prefix = development? ? '/assets/' : '/css/'
  suffix = development? ? '' : "-#{MyProject::VERSION}.min"
  %(<link rel="stylesheet" href="#{path_prefix}#{file_name}#{suffix}.css">)
end

Rakefile

namespace :assets do
  # `bundle exec rake assets:compile`
  # * Compile stylesheets and javascripts
  desc 'compile assets'
  task :compile => [:compile_css, :compile_js] do
  end

  # `bundle exec rake assets:compile_css`
  # IN  => /app/assets/stylesheets/styles.styl
  # OUT => /public/css/styles-<version>.min.css
  desc 'compile css assets'
  task :compile_css do
    puts "Compiling stylesheets"
    version = @new_version || MyProject::VERSION

    sprockets = Sprockets::Environment.new
    sprockets.append_path 'app/assets/stylesheets'

    # Add Stylus support
    # Stylus.setup sprockets
    # Stylus.compress = true
    # Stylus.use :nib

    asset = sprockets['styles.styl']
    outpath = File.join('public', 'css')
    outfile = Pathname.new(outpath).join("styles-#{version}.min.css")

    FileUtils.mkdir_p outfile.dirname

    asset.write_to(outfile)
    puts "=> Successfully compiled css assets"
  end

  # `bundle exec rake assets:compile_js`
  # IN  => /app/assets/javascripts/scripts.coffee
  # OUT => /public/js/scripts-<version>.min.js
  desc 'compile javascript assets'
  task :compile_js do
    puts "Compiling javascripts"
    version = @new_version || MyProject::VERSION

    sprockets = Sprockets::Environment.new
    sprockets.js_compressor = YUI::JavaScriptCompressor.new :munge => true, :optimize => true
    sprockets.append_path 'app/assets/javascripts'

    asset     = sprockets['scripts.coffee']
    outpath   = File.join('public', 'js')
    outfile   = Pathname.new(outpath).join("scripts-#{version}.min.js")

    FileUtils.mkdir_p outfile.dirname

    asset.write_to(outfile)
    puts "=> Successfully compiled js assets"
  end
end

version.rb

module MyProject
  VERSION = '0.0.1'
end