lib/stache/mustache/handler.rb in stache-1.1.1 vs lib/stache/mustache/handler.rb in stache-1.2.0

@@ -36,10 +36,12 @@
           mustache.virtual_path = '#{virtual_path}'
           mustache[:yield] = content_for(:layout)
           mustache.context.push(local_assigns)
           variables = controller.instance_variables
           variables.delete(:@template)
-          variables -= controller.class.protected_instance_variables.to_a
+          if controller.class.respond_to?(:protected_instance_variables)
+            variables -= controller.class.protected_instance_variables.to_a
+          end
 
           variables.each do |name|
             mustache.instance_variable_set(name, controller.instance_variable_get(name))
           end