新建目录的权限调整

app/controllers/course_modules_controller.rb

@@ -2,7 +2,8 @@ class CourseModulesController < ApplicationController
   before_action :require_login, :check_auth
   before_action :set_module, except: [:unhidden_modules]
   before_action :find_course, only: [:unhidden_modules]
-  before_action :teacher_or_admin_allowed
+  before_action :teacher_or_admin_allowed, except: [:add_second_category]
+  before_action :teacher_allowed, only: [:add_second_category]
 
   # 模块置顶
   def sticky_module