优化数组排序

有序排序

app/controllers/users_controller.rb

@@ -112,8 +112,8 @@ class UsersController < ApplicationController
     case params[:type]
       when nil
         @message_alls = []
-        system_message_types = MessageAll.where("message_type =?", "SystemMessage")
-        messages = MessageAll.where("user_id =? and message_type !=?" ,@user, "SystemMessage")
+        system_message_types = MessageAll.where("message_type =?", "SystemMessage").order("created_at desc")
+        messages = MessageAll.where("user_id =? and message_type !=?" ,@user, "SystemMessage").order("created_at desc")
         messages.each do |message_all|
           @message_alls << message_all.message
         end