增加商品属性定义

app/models/product_attr_config.rb

@@ -16,7 +16,7 @@ class ProductAttrConfig < ActiveRecord::Base
         #showProducts.each {|v| puts v}
         return showProducts
     end
-    PRODUCT_ENUM = show_products
+    PRODUCT_ENUM = self.show_products
     TYPE_ENUM = [["颜色","color"],["尺码","size"]]
     rails_admin do
         navigation_label '商品管理'