<% if user.user_extensions && user.user_extensions.brief_introduction && !user.user_extensions.brief_introduction.empty? %> <%= user.user_extensions.brief_introduction %> <% else%> 这位童鞋很懒，什么也没有留下～ <% end %> <% if User.current == user%> <%= link_to image_tag("../images/signature_edit.png",width:"12px", height: "12px"), "javascript:void(0);", :onclick => "show_edit_user_introduction();"%> <% end %>