Workaround for Haml issue #645

haml_monkey_patch.rb

# This is a workaround for the Haml bug:
#
#   https://github.com/haml/haml/issues/645
#
module Haml
  module Filters
    class SassRailsTemplate
      def render(scope=Object.new, locals={}, &block)
        scope = ::Rails.application.assets.context_class.new(
          "::Rails.application.assets",
          Pathname.new("/"),      # It is really only these two lines that
          Pathname.new("/")       # seem to be the bug.
        )
        super
      end
    end
  end
end