fohow 订单统计功能

app/models/order_static_detail.rb

@@ -16,10 +16,9 @@ class OrderStaticDetail < ActiveRecord::Base
       field :begin_date do
         visible true
         formatted_value do
-          :begin_date.strftime
+          self.begin_date.strftime
         end
       end
-      field :begin_date
       field :end_date
       field :state, :enum do
         enum do