From d667d82e5c9b3a5c8f032c3ecfb16c0c0e9aa1f1 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Mon, 10 Feb 2020 15:06:17 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B0=83=E6=95=B4=E5=AE=9E=E8=AE=AD=E6=8A=A5?=
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---
 app/models/student_work.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/student_work.rb b/app/models/student_work.rb
index 384a75da1..a4ae63f04 100644
--- a/app/models/student_work.rb
+++ b/app/models/student_work.rb
@@ -111,7 +111,7 @@ class StudentWork < ApplicationRecord
 
   # 作品总体评价
   def overall_appraisal
-    return nil if work_status == 0
+    return "--" if work_status == 0
     case (self.work_score.to_f / homework_common.total_score).round(2)
     when (0.90..1.00)
       '优秀'