实训脚本不能为空

app/controllers/challenges_controller.rb

@@ -230,7 +230,7 @@ class ChallengesController < ApplicationController
           logger.info("############shixun_publiced:#{@shixun.public == 0}")
           if @shixun.public == 0
             script = modify_shixun_script @shixun, @shixun.evaluate_script
-            @shixun.shixun_info.update_column(:evaluate_script, script)
+            @shixun.shixun_info.update_column(:evaluate_script, script) if script.present?
           end
           # TODO:
           # if path != params[:challenge][:path]

app/models/shixun_info.rb

@@ -2,10 +2,12 @@ class ShixunInfo < ApplicationRecord
   belongs_to :shixun
   validates_uniqueness_of :shixun_id
   validates_length_of :fork_reason, maximum: 60, message: "不能超过60个字符"
+  validates_presence_of :evaluate_script, message: "实训脚本不能为空"
   after_commit :create_diff_record
 
   validates :description, length: { maximum: 5000, too_long: "不能超过5000个字符" }
 
+
   private
 
   def create_diff_record