app/models/line_item.rb in trollied-0.1.3 vs app/models/line_item.rb in trollied-0.1.4

@@ -9,10 +9,11 @@
   # this is deprecated in Rails 3x, find workaround
   # an observer seemed like overkill and would have 3x compatibility stuff todo anyway
   after_destroy { |record| record.order.line_item_destroyed }
 
   # needs to be unique to orders that are current (but not unique to orders generally)
-  # validates_uniqueness_of :order_id, :scope => [:purchasable_item_type, :purchasable_item_id]
+  validates_uniqueness_of :order_id, :scope => [:purchasable_item_type, :purchasable_item_id]
+
   def validate
     errors.add(:order, I18n.t('line_item.already_in_order')) if !order.current? && !order.in_process? && order.contains?(purchasable_item)
   end
 end