编辑关卡时，上传附件

app/controllers/statistics_controller.rb

@@ -86,6 +86,7 @@ class StatisticsController < ApplicationController
 
     respond_to do |format|
       if @statistic.update_attributes(params[:statistic])
+        @statistic.save_attachments_containers(params[:attachments], User.current, true)
         format.html { redirect_to @statistic, notice: 'Statistic was successfully updated.' }
         format.json { head :no_content }
       else

app/views/statistics/show.html.erb

@@ -1,3 +1,6 @@
+<%= stylesheet_link_tag '/editormd/css/editormd','/editormd/css/editormd.min.css' %>
+<%= javascript_include_tag '/editormd/lib/marked.min.js','/editormd/lib/prettify.min.js','/editormd/lib/raphael.min.js','/editormd/lib/underscore.min.js','/editormd/lib/sequence-diagram.min.js',
+                           '/editormd/lib/flowchart.min.js','/editormd/lib/jquery.flowchart.min.js','/editormd/editormd.js' %>
 <div class="data_showdetail">
     <p id="notice"><%= notice %></p>
 
@@ -32,5 +35,17 @@
       <%= link_to '编辑', edit_statistic_path(@statistic) ,:class => "submit_btn" %>
       <%= link_to '返回', statistics_path ,:class=>"grey_btn" %>
     </div>
-
-</div>
+</div>
+<script>
+    $(document).ready(function() {
+        editormd.loadKaTeX(function() {
+            var taskPassMD = editormd.markdownToHTML("challenge_task_pass_show", {
+                htmlDecode: "style,script,iframe",  // you can filter tags decode
+                taskList: true,
+                tex: true,  // 默认不解析
+                flowChart: true,  // 默认不解析
+                sequenceDiagram: true // 默认不解析
+            });
+        });
+    });
+</script>