add balance promotion shop promotion

app/models/balance_promotion.rb

@@ -5,6 +5,8 @@ class BalancePromotion < ActiveRecord::Base
 
     validates :begin_time,:end_time,:name,:depart,:min_total,:max_total, presence: true
     validate :product_validation
+    attr_accessor :get_depart_enum
+
     def product_validation
       if self.send_prod1 > 0
         prd1 = Product.where("id = ?", self.send_prod1).first