如何自定义wordpress内部函数，例如neighbor_post_link() [英] how to customize wordpress internal functions, like adjacent_post_link()

问题描述

我需要在WordPress上自定义 previous_post_link()和 next_post_link().

每个例子，我想将诸如您需要学习的5种编程语言"之类的永久链接缩小为"5种编程...".

负责创建链接的函数 isadjacent_post_link()位于 wp-includes/link-template.php

解决方案

要为帖子创建自定义的相邻链接，我可以使用过滤器钩next_post_link和previos_post_link;

在functions.php中:

  functionrink_previous_post_link($ format，$ link){$ in_same_cat =假;$ excluded_categories ='';$ previous = true;$ link ='％title';$ format ='& laquo;％关联';如果($ previous&& is_attachment())$ post =&get_post($ GLOBALS ['post']-> post_parent);别的$ post = get_adjacent_post($ in_same_cat，$ excluded_categories，$ previous);如果(！$ post)返回;$ title = $ post-> post_title;如果(空($ post-> post_title))$ title = $上一个?__('上一个帖子'):__('下一个帖子');$ rel = $上一个?'prev':'next';//保存原始标题$ original_title = $ title;//创建短标题(如果需要)如果(strlen($ title)> 40){$ first_part = substr($ title，0，23);$ last_part = substr($ title，-17);$ title = $ first_part."...".$ last_part;}$ string ='< a href ='.get_permalink($ post).'" rel ='.$ rel.'" title ='.$ original_title.'">';;$ link = str_replace('％title'，$ title，$ link);$ link = $ string.$ link.'</a>';$ format = str_replace('％link'，$ link，$ format);回声$格式;}函数rinke_next_post_link($ format，$ link){$ in_same_cat =假;$ excluded_categories ='';$ previous = false;$ link ='％title';$ format ='％link& raquo;';如果($ previous&& is_attachment())$ post =&get_post($ GLOBALS ['post']-> post_parent);别的$ post = get_adjacent_post($ in_same_cat，$ excluded_categories，$ previous);如果(！$ post)返回;$ title = $ post-> post_title;如果(空($ post-> post_title))$ title = $上一个?__('上一个帖子'):__('下一个帖子');$ rel = $上一个?'prev':'next';//保存原始标题$ original_title = $ title;//创建短标题(如果需要)如果(strlen($ title)> 40){$ first_part = substr($ title，0，23);$ last_part = substr($ title，-17);$ title = $ first_part."...".$ last_part;}$ string ='< a href ='.get_permalink($ post).'" rel ='.$ rel.'" title ='.$ original_title.'">';;$ link = str_replace('％title'，$ title，$ link);$ link = $ string.$ link.'</a>';$ format = str_replace('％link'，$ link，$ format);回声$格式;}add_filter('next_post_link'，'shrink_next_post_link'，10,2);add_filter('previous_post_link'，'shrink_previous_post_link'，10,2); 

这就是我要做的.谢谢！

I need to customize the previous_post_link() and next_post_link() on WordPress.

Per example, I want to shrink permalinks like "Top 5 programming languages that you need to learn" to "Top 5 programing...".

The function responsible for creating the link isadjacent_post_link() located at wp-includes/link-template.php

解决方案

To create a custom adjacent link for posts I can make use of the filter hook next_post_link and previos_post_link;

In the functions.php:

function shrink_previous_post_link($format, $link){
    $in_same_cat = false;
    $excluded_categories = '';
    $previous = true;
    $link='%title';
    $format='« %link';


    if ( $previous && is_attachment() )
        $post = & get_post($GLOBALS['post']->post_parent);
    else
        $post = get_adjacent_post($in_same_cat, $excluded_categories, $previous);

    if ( !$post )
        return;

    $title = $post->post_title;

    if ( empty($post->post_title) )
        $title = $previous ? __('Previous Post') : __('Next Post');

    $rel = $previous ? 'prev' : 'next';

    //Save the original title
    $original_title = $title;

    //create short title, if needed
    if (strlen($title)>40){
        $first_part = substr($title, 0, 23);
        $last_part = substr($title, -17);
        $title = $first_part."...".$last_part;
    }   

    $string = '<a href="'.get_permalink($post).'" rel="'.$rel.'" title="'.$original_title.'">';
    $link = str_replace('%title', $title, $link);   
    $link = $string . $link . '</a>';

    $format = str_replace('%link', $link, $format);

    echo $format;   
}

function shrink_next_post_link($format, $link){
    $in_same_cat = false;
    $excluded_categories = '';
    $previous = false;
    $link='%title';
    $format='%link &raquo;';

    if ( $previous && is_attachment() )
        $post = & get_post($GLOBALS['post']->post_parent);
    else
        $post = get_adjacent_post($in_same_cat, $excluded_categories, $previous);

    if ( !$post )
        return;

    $title = $post->post_title;

    if ( empty($post->post_title) )
        $title = $previous ? __('Previous Post') : __('Next Post');

    $rel = $previous ? 'prev' : 'next';

    //Save the original title
    $original_title = $title;

    //create short title, if needed
    if (strlen($title)>40){
        $first_part = substr($title, 0, 23);
        $last_part = substr($title, -17);
        $title = $first_part."...".$last_part;
    }   

    $string = '<a href="'.get_permalink($post).'" rel="'.$rel.'" title="'.$original_title.'">';
    $link = str_replace('%title', $title, $link);   
    $link = $string . $link . '</a>';

    $format = str_replace('%link', $link, $format);

    echo $format;   
}

add_filter('next_post_link', 'shrink_next_post_link',10,2);
add_filter('previous_post_link', 'shrink_previous_post_link',10,2);

That all I needed to do. Thanks!

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