增加复制商品功能

app/models/product.rb

@@ -9,6 +9,8 @@ class Product < ActiveRecord::Base
     after_create :after_create
     #after_update :after_update
     before_save :before_save
+    after_destroy :del_picture
+
     def after_create
         #主商品默认关联商品
         if self.show_flag
@@ -22,6 +24,17 @@ class Product < ActiveRecord::Base
             self.relate_product_id = self.id
         end
     end
+
+    def del_picture
+        # 删除商品图片
+        pictures = ProductPicture.find_by_sql("select * from product_pictures where pic_type=0 and product_id = #{self.id}")
+        # 创建商品图片
+        pictures.each do |u|
+            u.remove
+        end
+    end
+
+
     TYPE_ENUM = [["直营","direct_sale"]]
     #["代销","user_sale"]
     SIZE_ENUM =  []