删除参考答案

app/controllers/challenges_controller.rb

@@ -234,6 +234,9 @@ class ChallengesController < ApplicationController
   #   {...}, ...]
   #}
   def crud_answer
+    if @challenge.challenge_answers && params[:challenge_answer].empty?
+      @challenge.challenge_answers.destroy_all
+    else
       raise '参考答案不能为空' if params[:challenge_answer].empty?
       raise '占比之和必须为100%' if params[:challenge_answer].map{|a| a[:score]}.sum != 100
       ActiveRecord::Base.transaction do
@@ -245,7 +248,7 @@ class ChallengesController < ApplicationController
                                  level: index+1, score: answer[:score], challenge_id: @challenge.id)
         end
       end
-
+    end
   end
 
   # 查看参考答案接口

app/views/challenges/crud_answer.json.jbuilder

@@ -1,2 +1,2 @@
 json.status 1
-json.message "创建参考答案成功"
+json.message "操作成功"