用户信息里增加是否学生的判断

app/services/careers_service.rb

@@ -506,7 +506,7 @@ class CareersService
     {username: current_user.show_name, login: current_user.login,
      user_id: current_user.id, image_url: url_to_avatar(current_user),
      admin: current_user.admin?, is_teacher: current_user.user_extensions.try(:identity) == 0,
-     tidding_count: count, phone: current_user.phone}
+     tidding_count: count, phone: current_user.phone, is_student: current_user.user_extensions.try(:identity) == 1}
   end
 
   def find_career id