From 39fa3c8096d94a6493557d02a56c137fb3317c40 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Mon, 13 Jan 2020 11:04:03 +0800
Subject: [PATCH] =?UTF-8?q?=E6=AF=95=E8=AE=BE=E4=BD=9C=E5=93=81=E9=99=84?=
 =?UTF-8?q?=E4=BB=B6=E5=AF=BC=E5=87=BA?=
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---
 app/helpers/export_helper.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/helpers/export_helper.rb b/app/helpers/export_helper.rb
index a5268a789..b7a4d4def 100644
--- a/app/helpers/export_helper.rb
+++ b/app/helpers/export_helper.rb
@@ -851,7 +851,7 @@ module ExportHelper
   def make_zip_name(work, file_name="")
     Rails.logger.info("######################file_name: #{file_name}")
     # name = file_name === "" ? "" : (file_name[0, file_name.rindex('.')]+"_")
-    course = work&.homework_common.course || work&.graduation_task.course
+    course = work&.homework_common&.course || work&.graduation_task&.course
     "#{course&.user_group_name(work.user_id)}_#{work&.user&.student_id}_#{work&.user&.real_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
   end