Continue adding product variants

app/models/product_order.rb

@@ -5,6 +5,7 @@ class ProductOrder
   property :quantity, type: Fixnum 
   property :price, type: Float
   property :product_name
+  property :product_variant
 
   belongs_to :product
   belongs_to :order
@@ -14,7 +15,8 @@ class ProductOrder
 
   # Getter for product name. If a supplier deletes a product, that has product_orders, the product
   # will become nil. This method should handle this case.
+  alias_method :direct_product_name, :product_name
   def product_name
-    product.try(:name) || '[deleted]'
+    direct_product_name.presence || product.try(:name) || '[deleted]'
   end
 end