Redirect on 404 page when the 'Post article' button was pressed 2nd time and there is tag with code

 
<form accept-charset="UTF-8" action="/antarcticle/articles" class="new_article" id="new_article" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="authenticity_token" type="hidden" value="NatFa4+v+gGGG2l2l7IYqoKubcdAYMI4619dqfUW8yM=" /></div>       <div class="control-group "><div class="controls">         <input class="span7" id="article_title" name="article[title]" placeholder="Article title" size="30" type="text" /> </div></div>       <div class="control-group "><div class="controls">         <label for="article_content" style="font-style: italic">           Editor uses Markdown markup language. You can read reference <a href="https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet" target="_blank">here</a>