2846 公共贴吧没有最后回复人就不显示最后回复

app/views/forums/_show_topics.html.erb

@@ -26,7 +26,10 @@
 			<tr>
 				<td align="left" colspan="2" ><span class="font_lighter"><%= authoring topic.created_at, topic.author %>
                   <span class="font_description2">
-                  最后回复：<%=link_to_user topic.last_reply.try(:author) %>
+                    <% author = topic.last_reply.try(:author)%>
+                    <% if author%>
+                        最后回复：<%=link_to_user author %>
+                    <% end%>
                   </span>
 					<br />
 				</span></td>