add balance promotion shop promotion

db/migrate/20210325114688_create_recharge_promotions.rb

@@ -64,7 +64,7 @@ class CreateRechargePromotions < ActiveRecord::Migration
       # 状态
       t.column :status, :boolean, :default=>1
       # 订单号
-      t.column :order_id, :string, :limit => 255
+      t.column :order_id, :string, :limit => 64
       #来源
       t.column :source, :string, :limit => 255
       #备注