$('#autosave').html('<%= hidden_field_tag('article[id]', @article.id) %>');
$('#preview_link').replaceWith('<%= link_to('Preview', {:controller => '/articles', :action => 'preview', :id => @article.id}, {:target => 'new', :class => 'btn btn-default'}); %>');
<% if @article.state.to_s.downcase == "draft" %>
  $("#article_published_at").val(<% Time.zone.now() %>);
<% end %>