From df714555fcf1aead83378154a8d66031fef3cd6c Mon Sep 17 00:00:00 2001
From: daiao <358551898@qq.com>
Date: Tue, 2 Jul 2019 17:07:23 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9E=E8=AE=AD=E5=85=B3=E5=8D=A1=E6=A0=87?=
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---
 app/models/challenge_tag.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/challenge_tag.rb b/app/models/challenge_tag.rb
index 6f176cc67..83b743adc 100644
--- a/app/models/challenge_tag.rb
+++ b/app/models/challenge_tag.rb
@@ -1,5 +1,5 @@
 class ChallengeTag < ApplicationRecord
 
   belongs_to :challenge, counter_cache: true
-  belongs_to :challenge_choose
+  belongs_to :challenge_choose, optional: true
 end