取消跳转到个人主页

app/views/courses/new.html.erb

@@ -50,7 +50,7 @@
       </li>
       <li class=" ml90" >
         <a href="javascript:void(0)" class="blue_btn fl c_white" onclick="submit_new_course();" >提交</a>
-        <a href="http://<%= Setting.host_course%>" target="_blank" class="blue_btn grey_btn fl c_white">取消</a>
+        <%= link_to "取消",user_activities_path(User.current.id),:class => "blue_btn grey_btn fl c_white"%>
         <div class="cl"></div>
       </li>
     <% end%>