新建课程时创建的班级设为私有

app/services/syllabuses_service.rb

@@ -49,6 +49,7 @@ class SyllabusesService
           c.tea_id = user.id
           c.syllabus_id = sy.id
           c.update_default_value
+          c.is_public = 0
           c.save!
           after_create_course(c, user)
         end