直播的二级目录

app/controllers/course_modules_controller.rb

@@ -2,9 +2,13 @@ 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, except: [:add_second_category]
+  before_action :teacher_or_admin_allowed, except: [:show, :add_second_category]
   before_action :teacher_allowed, only: [:add_second_category]
 
+  def show
+
+  end
+
   # 模块置顶
   def sticky_module
     # position为1则不做处理，否则该模块的position置为1，position小于当前模块的position加1

app/views/course_modules/show.json.jbuilder

@@ -0,0 +1,8 @@
+json.course_module do
+  json.id @course_module.id
+  json.module_name @course_module.module_name
+  json.module_type @course_module.module_type
+  json.course_second_categories do
+    json.array! @course_module.course_second_categories, :id, :name
+  end
+end