个人主页-助教关闭课程不能不可用

app/controllers/courses_controller.rb

@@ -605,7 +605,7 @@ class CoursesController < ApplicationController
 
   def toggleCourse
     @course_prefs = Course.find_by_extra(@course.extra)
-    unless (@course_prefs.teacher == User.current || User.current.admin?)
+    unless (@course_prefs.student != User.current || User.current.admin?)
       render_403
     end
   end