WxUser

app/models/silver.rb

@@ -6,6 +6,7 @@ class Silver < ActiveRecord::Base
   belongs_to :wx_user
   validates_presence_of :wx_user_id, :count, :relate_id, :source
   attr_accessor :remain_sum
+  before_save :before_save
 
   def before_save
     wxUser = WxUser.where("id = ?", self.wx_user_id).first