add confirm on balance order

app/models/product_attr_config.rb

@@ -29,6 +29,7 @@ class ProductAttrConfig < ActiveRecord::Base
                   PRODUCT_ENUM
                 end
             end
+            field :product_id
             field :product_attr_key
             field :size_type, :enum do
                 enum do
@@ -44,6 +45,7 @@ class ProductAttrConfig < ActiveRecord::Base
                   PRODUCT_ENUM
                 end
             end
+            field :product_id
             field :product_attr_key
             field :size_type, :enum do
                 enum do