issue author为空处理

app/views/users/_project_issue.html.erb

@@ -1,4 +1,5 @@
-<div class="resources mt10" id="user_activity_<%= user_activity_id%>">
+<% unless activity.author.nil? %>
+    <div class="resources mt10" id="user_activity_<%= user_activity_id%>">
       <div class="homepagePostBrief">
         <div class="homepagePostPortrait">
           <%= link_to image_tag(url_to_avatar(activity.author), :width => "50", :height => "50"), user_path(activity.author_id), :alt => "用户头像" %>
@@ -97,9 +98,11 @@
       <div id="div_user_issue_reply_<%=user_activity_id%>">
         <%= render :partial => 'users/project_issue_reply', :locals => {:activity => activity, :user_activity_id => user_activity_id} %>
       </div>
-</div>
+    </div>
-<script type="text/javascript">
+    <script type="text/javascript">
         $(function(){
             user_card_show_hide();
         });
-</script>
+    </script>
+<% end %>
+