From fdb2380face9d956ea273f8b63efa9ef5361fc96 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Sat, 20 Jul 2019 21:22:06 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B0=83=E6=95=B4?=
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---
 app/controllers/homework_commons_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 4685c9f69..8e4b888a1 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -196,7 +196,7 @@ class HomeworkCommonsController < ApplicationController
       if params[:format] == "xlsx"
         if @user_course_identity >= Course::STUDENT
           tip_exception(403, "无权限操作")
-        elsif @work_excel.size == 0
+        elsif @work_excel.blank? || @work_excel.size == 0
           normal_status(-1,"暂无用户提交！")
         else
           respond_to do |format|