published library disable publish action

app/views/libraries/_form.html.erb

@@ -49,7 +49,9 @@
     </div>
 
     <div class="operate mt20 mb20 clearfix">
-      <%= link_to '申请发布', 'javascript:void(0)', class: 'white-btn edu-blueback-btn changebtn mr20 fl apply-publish-btn' %>
+      <% unless @library.published? %>
+        <%= link_to '申请发布', 'javascript:void(0)', class: 'white-btn edu-blueback-btn changebtn mr20 fl apply-publish-btn' %>
+      <% end %>
       <%= link_to '保存', 'javascript:void(0)', class: 'white-btn edu-blueline-btn changebtn mr20 fl submit-btn' %>
     </div>
   <% end %>