add auto take cash function

app/models/order_detail.rb

@@ -121,5 +121,13 @@ class OrderDetail < ActiveRecord::Base
       field :price
       field :product_name
     end
+    export do
+      include_all_fields
+      field :wx_user_id do
+        formatted_value do
+          bindings[:object].order.wx_user_id
+        end
+      end
+    end
   end
 end

config/locales/models/order_detail.yml

@@ -4,8 +4,9 @@ zh-CN:
       order_detail: 订单明细表
     attributes:
      order_detail:
-       id: ID 
+       id: ID
        order_id: 订单Id
+       wx_user_id: 微信用户Id
        order_no: 订单编号
        order: 订单
        product_name: 产品名称