product package function develop

app/models/product_item.rb

@@ -8,8 +8,11 @@ class ProductItem < ActiveRecord::Base
     if self.product_id > 0
       prd = Product.where("id = ?", self.product_id).first
       if prd.blank?
-        self.errors.add(:product_id,"商品不存在，请重新填写商品ID")
+          self.errors.add(:product_id,"商品不存在，请重新填写商品ID")
       else
+        if !prd.package
+          self.errors.add(:product_id,"商品非套装商品，请重新录入！")
+        end
         self.title=prd.name
       end
     end