lib/active_model/translation.rb in activemodel-3.0.5 vs lib/active_model/translation.rb in activemodel-3.0.6.rc1

@@ -42,10 +42,10 @@
     #   Person.human_attribute_name("first_name") # => "First name"
     #
     # Specify +options+ with additional translating options.
     def human_attribute_name(attribute, options = {})
       defaults = lookup_ancestors.map do |klass|
-        :"#{self.i18n_scope}.attributes.#{klass.model_name.i18n_key}.#{attribute}"
+        :"#{self.i18n_scope}.attributes.#{klass.model_name.underscore}.#{attribute}"
       end
 
       defaults << :"attributes.#{attribute}"
       defaults << options.delete(:default) if options[:default]
       defaults << attribute.to_s.humanize