1 files changed, 12 insertions, 0 deletions
diff --git a/lib/oxidized/source/source.rb b/lib/oxidized/source/source.rb
index 7862dd1..9b8bc94 100644
--- a/lib/oxidized/source/source.rb
+++ b/lib/oxidized/source/source.rb
@@ -1,11 +1,23 @@
 module Oxidized
   class Source
     class NoConfig < OxidizedError; end
+
     def initialize
       @map = (Oxidized.config.model_map or {})
     end
+
     def map_model model
       @map.has_key?(model) ? @map[model] : model
     end
+
+    def node_var_interpolate var
+       case var
+       when "nil"   then nil
+       when "false" then false
+       when "true"  then true
+       else var
+       end
+    end
+
   end
 end