<%= link_to image_tag(url_to_avatar(activity.author), :width => "90", :height => "90"), user_path(activity.author_id), :alt => "用户头像" %>
<% if @ctivity.try(:author).try(:realname) == ' ' %> <%= link_to activity.try(:author), user_path(activity.author_id), :class => "newsBlue mr15" %> <% else %> <%= link_to activity.try(:author).try(:realname), user_path(activity.author_id), :class => "newsBlue mr15" %> <% end %> TO <%= link_to activity.course.name.to_s+"(课程名称)", course_path(activity.course), :class => "newsBlue ml15", :style=>"word-break:break-all" %>
<%=link_to activity.title.to_s+"(通知标题)", news_path(activity), :class=> "postGrey", :style=>"word-break:break-all" %>
发布时间：<%= format_date(activity.created_on) %>
（通知描述）<%= activity.description.html_safe %>