【生产环境】实训配置页的评测脚本选择后，无法清空，必须通过重新技术平台才行

app/controllers/shixuns_controller.rb

@@ -1163,11 +1163,16 @@ class ShixunsController < ApplicationController
   end
 
   def get_script_contents
-    mirrir_script =  MirrorScript.find(params[:script_id])
-    script = mirrir_script.try(:script)
-    description = mirrir_script.try(:description)
-    script = modify_shixun_script @shixun, script
-    render :json => {contents: script, description: description}
+    if params[:script_id].to_i == -1
+      render :json => {contents: "", description: ""}
+    else
+      mirrir_script =  MirrorScript.find(params[:script_id])
+      script = mirrir_script.try(:script)
+      description = mirrir_script.try(:description)
+      script = modify_shixun_script @shixun, script
+      render :json => {contents: script, description: description}
+    end
+
   end
 
   def get_common_script

app/views/shixuns/_settings_edit.html.erb

@@ -85,8 +85,9 @@
         <div class="clearfix">
           <div class="with15 pr fl" <%= @power ? "select-for" : "" %>>
             <input type="hidden" name="mirror_script" id="shixun_scenario" value="<%= @shixun.script_tag.try(:id) %>">
-            <input type="text" id="shixun_scenario_name" class="task-height-40 task-form-100 panel-box-sizing pr20 color-grey3 font-14" readonly placeholder="请选择脚本" value="<%= @shixun.script_tag.try(:script_type) %>"/>
+            <input type="text" id="shixun_scenario_name" class="task-height-40 task-form-100 panel-box-sizing pr20 color-grey3 font-14" readonly placeholder="请选择脚本" value="<%= @shixun.script_tag.try(:script_type) ?  @shixun.script_tag.try(:script_type) : "无" %>"/>
             <div class="down-select bor-grey-e user_bg_shadow" id="shixun_scenario_option">
+              <p data-shixun-value="-1" title="无">无</p>
               <% @shixun.standrad_script.each do |script| %>
                   <p data-shixun-value="<%= script.id %>" title="<%= script.script_type %>"><%= script.script_type %></p>
               <% end %>