<% if user.user_extensions && user.user_extensions.brief_introduction && !user.user_extensions.brief_introduction.empty? %> <%= user.user_extensions.brief_introduction %> <% else%> 这个小伙伴很懒，什么都没留下~ <% 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 %>