子比主题(zibll)论坛系统帖子标签与话题链接优化

/* 帖子话题URL地址 */
https://www.example.com/forum_topic/话题中文字符 => https://www.example.com/forum_topic/123.html


/* 帖子标签URL地址 */
https://www.example.com/forum_tag/标签中文字符 => https://www.example.com/forum_tag/123.html

<?php
/**
 * 将帖子话题（forum_topic）和帖子标签（forum_tag）链接从基于slug的格式改为基于term_id的数字格式
 * 添加到主题根目下的func.php文件中（没有的自己新建一个func.php文件）
 * 如果希望链接末尾带 .html ，请取消注释最后一行代码，反之同理
 */

class Zib_Term_Links_Modifier {
    
    private static $instance = null;
    
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    private function __construct() {
        $this->setup_hooks();
    }
    
    private function setup_hooks() {
        // 注册过滤器和动作
        add_action('init', array($this, 'add_rewrite_rules'));
        add_filter('term_link', array($this, 'forum_tag_term_link'), 10, 3);
        add_filter('term_link', array($this, 'forum_topic_term_link'), 10, 3);
        add_filter('request', array($this, 'numeric_term_request'));
        
        // 主题激活时刷新重写规则
        add_action('after_switch_theme', array($this, 'maybe_flush_rewrite_rules'));
    }
    
    /**
     * 修改forum_tag的链接为term_id格式
     */
    public function forum_tag_term_link($link, $term, $taxonomy) {
        if ($taxonomy === 'forum_tag') {
            return home_url("/forum_tag/{$term->term_id}");
        }
        return $link;
    }
    
    /**
     * 修改forum_topic的链接为term_id格式
     */
    public function forum_topic_term_link($link, $term, $taxonomy) {
        if ($taxonomy === 'forum_topic') {
            return home_url("/forum_topic/{$term->term_id}");
        }
        return $link;
    }
    
    /**
     * 处理数字ID的查询解析
     */
    public function numeric_term_request($query_vars) {
        $taxonomies = ['forum_tag', 'forum_topic'];
        
        foreach ($taxonomies as $taxonomy) {
            if (isset($query_vars[$taxonomy]) && is_numeric($query_vars[$taxonomy])) {
                $term = get_term($query_vars[$taxonomy], $taxonomy);
                if ($term && !is_wp_error($term)) {
                    $query_vars[$taxonomy] = $term->slug;
                }
            }
        }
        return $query_vars;
    }
    
    /**
     * 添加重写规则
     */
    public function add_rewrite_rules() {
        // forum_topic重写规则
        add_rewrite_rule('^forum_topic/([0-9]+)/?$', 'index.php?forum_topic=$matches[1]', 'top');
        add_rewrite_rule('^forum_topic/([0-9]+)/page/([0-9]{1,})/?$', 'index.php?forum_topic=$matches[1]&paged=$matches[2]', 'top');

        // forum_tag重写规则
        add_rewrite_rule('^forum_tag/([0-9]+)/?$', 'index.php?forum_tag=$matches[1]', 'top');
        add_rewrite_rule('^forum_tag/([0-9]+)/page/([0-9]{1,})/?$', 'index.php?forum_tag=$matches[1]&paged=$matches[2]', 'top');
    }
    
    /**
     * 刷新重写规则
     */
    public function maybe_flush_rewrite_rules() {
        if (get_option('zib_term_links_rewrite_flushed') !== '1') {
            flush_rewrite_rules();
            update_option('zib_term_links_rewrite_flushed', '1');
        }
    }
    
    /**
     * 可选：添加.html后缀版本
     */
    public function enable_html_suffix() {
        remove_filter('term_link', array($this, 'forum_tag_term_link'));
        remove_filter('term_link', array($this, 'forum_topic_term_link'));
        
        add_filter('term_link', array($this, 'forum_tag_term_link_html'), 10, 3);
        add_filter('term_link', array($this, 'forum_topic_term_link_html'), 10, 3);
        
        // 更新重写规则
        remove_action('init', array($this, 'add_rewrite_rules'));
        add_action('init', array($this, 'add_rewrite_rules_html'));
    }
    
    public function forum_tag_term_link_html($link, $term, $taxonomy) {
        if ($taxonomy === 'forum_tag') {
            return home_url("/forum_tag/{$term->term_id}.html");
        }
        return $link;
    }
    
    public function forum_topic_term_link_html($link, $term, $taxonomy) {
        if ($taxonomy === 'forum_topic') {
            return home_url("/forum_topic/{$term->term_id}.html");
        }
        return $link;
    }
    
    public function add_rewrite_rules_html() {
        add_rewrite_rule('^forum_topic/([0-9]+)\.html/?$', 'index.php?forum_topic=$matches[1]', 'top');
        add_rewrite_rule('^forum_topic/([0-9]+)\.html/page/([0-9]{1,})/?$', 'index.php?forum_topic=$matches[1]&paged=$matches[2]', 'top');

        add_rewrite_rule('^forum_tag/([0-9]+)\.html/?$', 'index.php?forum_tag=$matches[1]', 'top');
        add_rewrite_rule('^forum_tag/([0-9]+)\.html/page/([0-9]{1,})/?$', 'index.php?forum_tag=$matches[1]&paged=$matches[2]', 'top');
    }
}

// 初始化类
Zib_Term_Links_Modifier::get_instance();

// 可选：如果需要.html后缀，取消注释下面这行
// Zib_Term_Links_Modifier::get_instance()->enable_html_suffix();