From 7b988654cb9a70adf7e981b5a5a9ebe2053c7e15 Mon Sep 17 00:00:00 2001
From: daiao <358551898@qq.com>
Date: Wed, 28 Aug 2019 09:45:44 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=A0=E9=99=A4=E9=80=89=E6=8B=A9=E9=A2=98?=
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---
 app/controllers/challenges_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/challenges_controller.rb b/app/controllers/challenges_controller.rb
index 48ba77b0c..8cb68b1d4 100644
--- a/app/controllers/challenges_controller.rb
+++ b/app/controllers/challenges_controller.rb
@@ -234,7 +234,7 @@ class ChallengesController < ApplicationController
   #   {...}, ...]
   #}
   def crud_answer
-    if @challenge.challenge_answers && params[:challenge_answer].empty?
+    if @challenge.challenge_answers && params[:challenge_answer].blank?
       @challenge.challenge_answers.destroy_all
     else
       raise '参考答案不能为空' if params[:challenge_answer].empty?