sqlate index nil

app/views/quality_analysis/_show.html.erb

@@ -63,7 +63,7 @@
             0天
         <% else %>
             <%= /[0-9]*/.match(@ha["sqale_index"])[0] %>天
-            <%= / [0-9]*/.match(@ha["sqale_index"]).nil? ? "" : / [0-9]*/.match(@ha["sqale_index"])+"小时" %>
+            <%= / [0-9]*/.match(@ha["sqale_index"]).nil? ? "" : (/ [0-9]*/.match(@ha["sqale_index"]).to_s + "小时") %>
         <% end %>
       </span>
     <span class="fontGrey2"><a class="linkBlue2" target="_blank" href="<%= @sonar_address %>/drilldown/measures/<%= @resource_id %>?metric=sqale_index">查看详情</a></span></div>