get the data to work with active_yaml

lib/opal/rails/haml_filter.rb

@@ -0,0 +1,19 @@
+require "haml"
+require "haml/filters"
+require "haml/filters/base"
+
+module Haml
+  class Filters
+    class Opal < Base
+      def compile(node)
+        temple = [:multi]
+        temple << [:static, "<script type='text/javascript'>\n"]
+        temple << [:static, ::Opal.compile(node.value[:text]) ]
+        temple << [:static, "\n</script>"]
+        temple
+      end
+    end
+  end
+end
+
+Haml::Filters.registered[:opal] ||= Haml::Filters::Opal