添加教师弹框的教师姓名

app/views/courses/search_teacher_candidate.json.jbuilder

@@ -1,7 +1,7 @@
 json.candidates do
   json.array! @users do |user|
     json.id user.id
-    json.name user.firstname + user.lastname
+    json.name user.real_name
     json.nickname user.nickname
     json.school_name user.user_extension.school.try(:name)
     json.school_id user.user_extension.school.try(:id)