<% if PraiseTread.praised(activity) %> 赞 <% num = activity.praise_tread_cache ? activity.praise_tread_cache.praise_num : 0 %> <%= (num.nil? ? 0 : num) > 0 ? "（#{(num.nil? ? 0 : num)}）" : "" %> <% else %> 已赞 <% num = activity.praise_tread_cache ? activity.praise_tread_cache.praise_num : 0 %> <%= (num.nil? ? 0 : num) > 0 ? "（#{(num.nil? ? 0 : num)}）" : "" %> <% end %>