app/models/educode_sales/business.rb in educode_sales-0.7.4 vs app/models/educode_sales/business.rb in educode_sales-0.7.5

@@ -1,14 +1,15 @@
 module EducodeSales
   class Business < ApplicationRecord
 
     belongs_to :staff
     belongs_to :department
-    belongs_to :last_follow_up, class_name: 'FollowUp', optional: true
+    belongs_to :last_follow_up, class_name: 'FollowUp', optional: true # 允许last_follow_up_id字段中的数为nil
 
     has_many :sale_plans
     has_many :follow_ups
 
+    #每次查询时 默认的查询条件
     default_scope  -> {where(deleted_at: nil)}
 
     def soft_destroy(user_id)
       self.update(deleted_at: Time.now)
       self.sale_plans.each do |d|