组织列表时间倒序排列

app/controllers/admin_controller.rb

@@ -390,7 +390,7 @@ class AdminController < ApplicationController
 
   #组织
   def organization
-    @organizations = Organization.all
+    @organizations = Organization.find_by_sql("SELECT * FROM organizations ORDER BY created_at DESC")
     respond_to do |format|
       format.html
     end