add auto take cash function

app/models/order_detail.rb

@@ -70,9 +70,8 @@ class OrderDetail < ActiveRecord::Base
         end
       end
       field :paid_time do
-        paidtime=bindings[:object].order.paied_at
         formatted_value do
-              (paidtime == 0 || paidtime == nil) ? Time.at(0) : Time.at(paidtime)
+              (bindings[:object].order.paied_at == 0 || bindings[:object].order.paied_at == nil) ? Time.at(0) : Time.at(bindings[:object].order.paied_at)
         end
       end
       field :pay_way, :enum do