socialforge/app/views/praise_tread/_praise.html.erb

<% if PraiseTread.praised(activity) %>
    <a href='<%= praise_tread_praise_plus_path({:obj_id=>activity.id,:obj_type=>activity.class,:user_activity_id=>user_activity_id,:type=>type }) %>' data-remote="true" class="<%=type == 'reply'? 'fr' : 'ml15' %> likeButton" title="点赞" >
      <span class="likeText">赞</span>
      <% num = activity.praise_tread_cache ? activity.praise_tread_cache.praise_num : 0 %>
      <span class="likeNum"><%= (num.nil? ? 0 : num) > 0 ? "（#{(num.nil? ? 0 : num)}）" : "" %></span>
    </a>
<% else %>
    <a href='<%= praise_tread_praise_minus_path({:obj_id=>activity.id,:obj_type=>activity.class,:user_activity_id=>user_activity_id,:type=>type }) %>'  data-remote="true" class="<%=type == 'reply'? 'fr' : 'ml15' %> likeButton" title="取消点赞" >
      <span class="likeText">已赞</span>
      <% num = activity.praise_tread_cache ? activity.praise_tread_cache.praise_num : 0 %>
      <span class="likeNum"><%= (num.nil? ? 0 : num) > 0 ? "（#{(num.nil? ? 0 : num)}）" : "" %></span>
    </a>
<% end %>