让您的主题支持WP2.7新留言评论功能
大多使用wordpress搭建过站点的人都会使用评论插件，这是由于wp2.7以前的版本缺省的评论留言设置功能性很差，但使用过多的插件会严重带慢wp系统的运行效率，wordpress2.7发布后
终于解决了这个问题，经过这次升级后wordpress的评论留言功能大大的加强了，开始自带了“嵌套回复”也就是引用回复和评论留言分页功能，但是一个问题随之出现，那就是几乎所有用户现行使用的主题模板中都没有写入能够
正常使用wp2.7这个新功能的代码。而且目前能够支持这一功能的新主题模板又少之又少！这个贴子将step by step的告诉大家如何快速的让你的模板支持这一功能！
提示：必须先将wp系统升级到2.7以上版本（最新版本为2.7.1）。
关键点：
用新留言调用函数:
1 | <?php wp_list_comments();?> |
关于 wp_list_comments函数更多请参阅wp_list_comments官方文档
替换旧函数:
1 | <?php comment_text() ?> |
第一步
到后台停用那些臃肿庞大的评论优化插件。并到后台设置（wp2.7）→进入讨论项，勾选里面的“允许嵌套X层评论”选项。
第二步
选择主题（以WPclassic主题为例），打开header.php。
在:
1 | wp_head(); |
这个函数之前添上:
1 | <?php if ( is_singular() ) wp_enqueue_script( 'comment-reply' ); ?> |
说明：该代码的作用是在文章和页面调用新的留言评论Javascript文件！
第三步
在模板的编辑板块里打开comments.php评论模板，通常的模板的留言列表部分的代码如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 | <?php if ( $comments ) : ?>
<ol id="commentlist">
<?php foreach ($comments as $comment) : ?>
<li>
...
<?php comment_text() ?>
...
</li>
<?php endforeach; ?>
</ol>
<?php else : // If there are no comments yet ?>
<p><?php _e('No comments yet.'); ?></p>
<?php endif; ?> |
整体替换成：
1 2 3 4 5 6 7 | <?php if ( $comments ) : ?>
<ol class="commentlist">
<?php wp_list_comments();?>
</ol>
<?php else : // If there are no comments yet ?>
<p><?php _e('No comments yet.'); ?></p>
<?php endif; ?> |
说明：在wp2.7版里是用一个wp_list_comments();完全取代原来模板里经常会用到的comment_text、comment_date、comment_time、comment_author_link、echo get_avatar这几个函数。需要注意的是如果你原来的ol、ul等用的是
id=”commentlist”应改为class=”commentlist”，如果不改可能会跟我们之后新定义的CSS样式产生冲突。
Tip：当然每个模板的代码情况可能不尽相同，但是大同小异，只需要记住这一步是要用新函数“wp_list_comments();”替换旧函数“comment_text()”这个关键点就可以了，比如你以前手动添加过avatar头像等函数也不要紧下面
举个例子来说明：
比如你以前的留言评论列表部分的代码如下，这是段典型的自定义过comment_text、comment_date、comment_time、comment_author_link、echo get_avatar这些函数的代码：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | <?php if ($comments) : ?>
<ul class="commentlist">
<?php foreach ($comments as $comment) : ?>
<?php
$isByAuthor = false;
if($comment->comment_author_email == get_the_author_email()) {
$isByAuthor = true;
}?>
<div class="commentlist">
<li id="comment-<?php comment_ID() ?>" <?php if($isByAuthor ) { echo 'class="my_comment"';} ?>>
<div class="commentlistleft">
<?php echo get_avatar( $comment, $size = '45' ); ?>
<cite><strong><?php comment_author_link() ?> <?php if($isByAuthor ) { echo '';} ?> </strong></cite>
</div>
<div class="commenttext">
<div class="commentmetadata"><?php comment_date('Y-j-n') ?> <?php comment_time('H:i:s') ?></div>
<?php if ($comment->comment_approved == '0') : ?>
<p><em>您的留言正在等待审核.....</em></p>
<?php endif; ?>
<?php comment_text() ?>
</div>
</div>
</li>
<?php endforeach; /* end for each comment */ ?>
</ul>
<?php else : // this is displayed if there are no comments so far ?>
<?php if ('open' == $post->comment_status) : ?>
<!-- If comments are open, but there are no comments. -->
<?php else : // comments are closed ?>
<!-- If comments are closed. -->
<p class="nocomments">Comments are closed.</p>
<?php endif; ?>
<?php endif; ?> |
很乱吧，没关系你需要做的只是把其中的
1 | <ul class="commentlist">.......</ul> |
这个闭合中的所有元素整体替换成：
1 2 3 | <ol class="commentlist"> <?php wp_list_comments();?> </ol> |
替换后代码就变成这样了
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <?php if ($comments) : ?>
<ol class="commentlist">
<?php wp_list_comments();?>
</ol>
<?php else : // this is displayed if there are no comments so far ?>
<?php if ('open' == $post->comment_status) : ?>
<!-- If comments are open, but there are no comments. -->
<?php else : // comments are closed ?>
<!-- If comments are closed. -->
<p class="nocomments">留言功能已关闭，如果您有话要说请访问留言板！</p>
<?php endif; ?>
<?php endif; ?> |
怎么样简洁多了吧！当然这时你也许会有疑惑；comment_text、comment_date、comment_time、comment_author_link、echo get_avatar这些函数就这样被替换掉了他们的div也被删掉，那之前给他们定义css样式也就是失效了，我
去哪里重新定义呢！别着急面包会有的！继续往下看就知道了！ 
第四步
还是在comments.php这个文件里输入”textarea“查找到textarea/textarea这个闭合，其实就是找到输入留言的那个field区域！看看这个textarea中是否有id=”comment”这个属性，如果有就把id=”comment”去掉（不是去掉
div里的，而是去掉textarea中的ID定义）。
第五步
继续在comments.php这个文件找到下面这段代码：
1 | <input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" /> |
用下面这段代码替换：
1 | <?php comment_id_fields(); ?> |
说明：这也是很关键的一步，comment_id_fields函数的作用是对回复框进行定义，以便支持新的嵌套回复功能。
第六步
新建一个id为”respond”的div包裹（div id=”respond”…………/div）把从（还是以WPclassic主题为例）
1 | <h2 id="postcomment"><?php _e('Leave a comment'); ?></h2> |
到
1 | <?php endif; // If registration required and not logged in ?> |
闭合起来！
说明：这样做是为了在点击留言者旁边的“回复”时，即可把留言框整体移至想要回复的留言下面！但是这个效果我也没有修改成功，现在的效果是点击回复时页面会自动移至底下的留言框位置，也能方便留言回复。
第七步
在上一步id为”respond”的div包裹内的头部或者底部增加下面这一段：
1 2 3 | <div id="cancel-comment-reply">
<small><?php cancel_comment_reply_link() ?></small>
</div> |
这是一个取消引用回复的链接选项，比如你点击了谁的留言回复，突然又不想回复了，就点击它取消刚才的评论状态，其实作用很鸡肋。
第八步
最后就是对以上修改的这些函数进行新的CSS的定义，下面给出的是一个国外网友Chris Harrison提供了CSS部分一套配色方案，基础已经打得很好了，把它拷贝到你的style.css文件中就可以了，如果需要修改，你只需要在里面找
到相对应的项可以了！
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | ol.commentlist { list-style:none; margin:0 0 1em; padding:0; text-indent:0; }
ol.commentlist li { }
ol.commentlist li.alt { }
ol.commentlist li.bypostauthor {}
ol.commentlist li.byuser {}
ol.commentlist li.comment-author-admin {}
ol.commentlist li.comment { border-bottom:1px dotted #666; padding:1em; }
ol.commentlist li div.comment-author {}
ol.commentlist li div.vcard { font:normal 16px georgia,times,serif; }
ol.commentlist li div.vcard cite.fn { font-style:normal; }
ol.commentlist li div.vcard cite.fn a.url {}
ol.commentlist li div.vcard img.avatar { border:5px solid #ccc; float:right; margin:0 0 1em 1em; }
ol.commentlist li div.vcard img.avatar-32 {}
ol.commentlist li div.vcard img.photo {}
ol.commentlist li div.vcard span.says {}
ol.commentlist li div.commentmetadata {}
ol.commentlist li div.comment-meta { font-size:9px; }
ol.commentlist li div.comment-meta a { color:#ccc; }
ol.commentlist li p { font-size:11px; margin:0 0 1em; }
ol.commentlist li ul { font-size:11px; list-style:square; margin:0 0 1em 2em; }
ol.commentlist li div.reply { font-size:11px; }
ol.commentlist li div.reply a { font-weight:bold; }
ol.commentlist li ul.children { list-style:none; margin:1em 0 0; text-indent:0; }
ol.commentlist li ul.children li {}
ol.commentlist li ul.children li.alt {}
ol.commentlist li ul.children li.bypostauthor {}
ol.commentlist li ul.children li.byuser {}
ol.commentlist li ul.children li.comment {}
ol.commentlist li ul.children li.comment-author-admin {}
ol.commentlist li ul.children li.depth-2 { border-left:5px solid #555; margin:0 0 .25em .25em; }
ol.commentlist li ul.children li.depth-3 { border-left:5px solid #999; margin:0 0 .25em .25em; }
ol.commentlist li ul.children li.depth-4 { border-left:5px solid #bbb; margin:0 0 .25em .25em; }
ol.commentlist li ul.children li.depth-5 {}
ol.commentlist li ul.children li.odd {}
ol.commentlist li.even { background:#fff; }
ol.commentlist li.odd { background:#f6f6f6; }
ol.commentlist li.parent { border-left:5px solid #111; }
ol.commentlist li.pingback { border-bottom:1px dotted #666; padding:1em; }
ol.commentlist li.thread-alt { }
ol.commentlist li.thread-even {}
ol.commentlist li.thread-odd {} |
还可以参看国外网友Chris Harrison提供的几种配色方案。
注明：这篇文章是参考了零号相册提供的修改方法，加上我自己修改时的体验写成的！
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新的评论循环，将每一个评论放入一个 li 中，也很好的做了嵌套的支持
呵呵 看哈效果～！
嵌套一哈