Question

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

例如，我想将“你需要学习的前5种编程语言”等固定链接缩小为“前5种编程......”。

负责创建位于isadjacent_post_link()

的链接wp-includes/link-template.php的函数

Answer 1

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

在functions.php中：

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

我需要做的一切。谢谢！

Answer 2

next_post_link()和previous_post_link()功能都带有自定义选项。 http://codex.wordpress.org/Function_Reference/next_post_link。在阅读并了解函数的可接受参数之后，请测试是否可以将php函数传递给该选项，如substr（）。

<?php next_post_link('%link',substr('%title',20),FALSE);?>

'％link'和'％title'是帖子链接和标题的简码。

让我们知道它是否成功。

如何自定义wordpress内部函数，如adjacent_post_link（）

2 个答案: