Merge remote-tracking branch 'origin/dev_aliyun' into dev_aliyun

app/controllers/hacks_controller.rb

@@ -44,12 +44,13 @@ class HacksController < ApplicationController
     begin
       logger.info("##########{hack_params}")
       hack = Hack.new(hack_params)
+      hack.user_id = current_user.id
+      hack.identifier = generate_identifier Hack, 8
       ActiveRecord::Base.transaction do
-        hack.user_id = current_user.id
-        hack.identifier = generate_identifier Hack, 8
         hack.save!
         # 创建测试集与代码
         hack.hack_sets.create!(hack_sets_params)
+        # 新建知识点
         hack_codes = hack.hack_codes.new(hack_code_params)
         hack_codes.modify_time = Time.now
         hack_codes.save!