我一直在修改我在Stack Overflow上发现的一个类,用于改变Wordpress的摘录长度。它一直是一只熊(因为我是OOP的新手),但它最终确实有效并接受第二个参数来过滤更多的链接。我想做的是,目前输出的是'the_excerpt',它会在调用函数“my_excerpt()”时立即回显。我想添加一个名为“get_my_excerpt”的函数来返回值。我知道get_the_excerpt()正是这样做的,但我似乎无法让它在这个类中工作。
/* Class that enables excerpt length parameter */
/* called via my_excerpt('length') */
class Excerpt {
// Default length (by WordPress)
public static $length = 55;
// Default more (by WordPress)
public static $more = "[...]";
// So you can call: my_excerpt('short');
public static $types = array(
'short' => 25,
'regular' => 55,
'long' => 100,
'xlong' => 200,
);
// So you can call: my_excerpt('short');
public static $more_types = array(
'none' => "",
'regular' => "[...]",
'ellipse' => "...",
'permalink' => 'skip',
);
/**
* Sets the length for the excerpt,
* then it adds the WP filter
* And automatically calls the_excerpt();
*
* @param string $new_length
* @return void
* @author Baylor Rae'
*/
public static function filter($new_length = 55, $new_more="[...]", $echo=TRUE) {
Excerpt::$length = $new_length;
Excerpt::$more = $new_more;
add_filter('excerpt_length', 'Excerpt::new_length',98);
add_filter('excerpt_more', 'Excerpt::new_more',99);
return Excerpt::output();
}
// Tells WP the new length
public static function new_length() {
if( isset(Excerpt::$types[Excerpt::$length]) )
return Excerpt::$types[Excerpt::$length];
else
return Excerpt::$length;
}
// Tells WP the new more
public static function new_more() {
$db = new ReadMore;
if( isset(Excerpt::$more_types[Excerpt::$more]) AND ( (Excerpt::$more_types[Excerpt::$more]) != "skip" ) )
return Excerpt::$more_types[Excerpt::$more];
elseif( isset(Excerpt::$more_types[Excerpt::$more]) AND ( (Excerpt::$more_types[Excerpt::$more]) == "skip" ) )
return $db->readmore();
else
return Excerpt::$more;
}
// Echoes out the excerpt
public static function output() {
return get_the_excerpt();
}
}
// An alias to the class
function get_my_excerpt($length = 55, $more="[...]") {
return Excerpt::filter($length, $more);
}
// An alias to the class
function my_excerpt($length = 55, $more="[...]") {
echo get_my_excerpt($length, $more);
}
class ReadMore {
private $title;
private $permalink;
private $more;
public function __construct () {
//$this->title = get_the_title();
//$this->permalink = get_permalink();
$temp = "..." . '<a class="readmore" title="'. _('Permalink to').get_the_title() . '" href=" ' . get_permalink() . '">'._('Read the rest').'</a>';
$this->more = $temp;
}
public function readmore() {
return $this->more;
}
}
答案 0 :(得分:1)
如果您不想重写或复制粘贴一些代码,我认为这段代码可以提供帮助,代码不优雅但有效,只需添加此功能:
function get_my_excerpt($length = 55, $more="[...]") {
ob_start();
Excerpt::filter($length, $more);
$my_excerpt = ob_get_contents();
ob_end_clean();
}
我想更好的解决方法是重写一些代码,例如,在静态函数output()中使用get_the_excerpt()而不是the_excerpt(),在Excerpt :: filter函数中添加相应的返回值,在my_excerpt函数中添加一个echo,最后添加这个函数:
function get_my_excerpt($length = 55, $more="[...]") {
return Excerpt::filter($length, $more);
}