From 605ab0923cff056b1c2ce6f9ed8cf4d972736995 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Wed, 16 Oct 2019 16:52:24 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=9C=E4=B8=9A=E8=AF=B4=E6=98=8E=E5=8A=A0?=
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---
 app/models/homework_common.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/models/homework_common.rb b/app/models/homework_common.rb
index fc2dd3ea4..def3b6b0d 100644
--- a/app/models/homework_common.rb
+++ b/app/models/homework_common.rb
@@ -37,6 +37,7 @@ class HomeworkCommon < ApplicationRecord
 
   validates :name, length: { maximum: 60 }
   validates :description, length: { maximum: 15000 }
+  validates :explanation, length: { maximum: 5000 }
   validates :reference_answer, length: { maximum: 15000 }
 
   # after_update :update_activity