Home Backend Development PHP Tutorial 让WordPress的Post和Page支持<!–more–>标签_PHP

让WordPress的Post和Page支持<!–more–>标签_PHP

Jun 01, 2016 pm 12:20 PM

WordPress

当我们在wordpress中使用标签截断文章时,在首页、分类、标签和存档等页面的文章内容都是显示之前的文章,而在文章(Post)和页面(Page)中时,则忽略标签,显示全文。

这当然是合理的,你总不可能让访客在你的最终文章页还瞅着摘要发呆。

但对主题开发者来说,经常会使用一个Page Template来罗列一个符合查询条件的文章列表。比如下面这段代码返回分类ID为3下的所有文章。

以下为引用的内容:

<font face="NSimsun"><?php query_posts('cat=3'); while(have_posts): the_post(); ?><br><h2><?php the_title(); ?></h2> <br><?php the_content(); ?><br><?php endwhile; ?></font>

但在这份文章列表里面,the_content()函数将始终输出全文,不管你是否在文章中使用了more标签。因为WordPress只知道这是一个Page页面,要显示全文,而不会智能的根据你是否使用了query_posts()或新建了一个WP_Query对象来决定是否支持more标签。

P.S:说来惭愧,做了这么长时间的wordpress主题,我直到今天才发现这个问题。因为我个人比较喜欢“纯文字摘要列表”的方式,以往需要创建文章列表时,都是使用自动截取文章字符的方式。但正在进行的一个项目,客户要求输出html全文,然后手动插入more标签截断。

废话说了半天,其实解决方法简单的不行,请看代码(via weblogtoolscollection):

以下为引用的内容:

<font face="NSimsun"><?php global $more; $more = false; ?><br><?php the_content('Continue Reading'); ?><br><?php $more = true; ?></font>

说明: 在the_content()函数前声明一个全局变量$more并且设置为flase就可以了。如果你希望在内容显示完成后又回到原来的状态,那在后面再把$more变量设置为true。

原文地址:http://paranimage.com/the-more-tag-on-a-wordpress-page/

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