many.rb in custom_fields-2.0.0.rc5

- old
+ new

@@ -10,9 +10,11 @@
         def build_with_custom_fields(attributes = {}, options = {}, type = nil)
           if base.respond_to?(:custom_fields_for?) && base.custom_fields_for?(metadata.name)
             # all the information about how to build the custom class are stored here
             recipe = base.custom_fields_recipe_for(metadata.name)
 
+            attributes ||= {}
+
             attributes.merge!(:custom_fields_recipe => recipe)
 
             # build the class with custom_fields for the first time
             type = metadata.klass.klass_with_custom_fields(recipe)
           end
\ No newline at end of file