WordPress是一个基于查询的系统，您首先需要了解如果使用permalinks和http://domain.com/hospital/hospitalname 提交，WP内部分析如下

发布类型=医院，然后创建查询进行查找。其他链接也是如此，例如http://domain.com/cityname/hospitalname

自定义重写开始工作之前的假设。假设您know 和understand post type 和taxonomy setup. 因为在发布类型和分类设置时。参数决定如何rewrite path 和query_var 将进行设置。

如果，在case中，帖子类型和分类是由plugins, 通过someone else 而是你自己。有必要找出，这是无法猜测的，因为在设置时，自定义参数可能正在更改默认名称。你的情况是这样的。如果您试图通过猜测和假设名称与看起来的名称相同来进行测试，这将浪费时间。

以下示例基于asker在讨论中的信息。它可以帮助任何在理解重写方面苦苦挣扎的人。

了解what taxonomy exists

add_action( \'init\', \'ws361150_debug_test\' );
function ws361150_debug_test() {
    // please comment/uncomment the debug output needed

    // get an array list of available taxonomies name
    // var_dump(get_taxonomies());

    // get an array list of available taxonomies name => object pair
    // var_dump(get_taxonomies( [], \'objects\'));

    // get a specific object (include assoicated post type name)
    // var_dump(get_taxonomy( \'towns\' ));
}

// ... reference result
// ["countries"]=> string(9) "countries" 
// ["cities"]=> string(6) "cities" 
// ...

• 什么是重写标记，什么是查询变量

  // taxonomy example
  // object(WP_Taxonomy)[1329]
  //   public \'name\' => string \'towns\' (length=5) // taxonomy slug
  //   ...
  //   public \'public\' => boolean true
  //   public \'publicly_queryable\' => boolean true // http://example/?xxxxx= is allowed
  
  //   // post type associated with this taxonomy
  //   public \'object_type\' => 
  //     array (size=1)
  //       0 => string \'post\' (length=4)
  //   public \'rewrite\' => 
  //     array (size=4)
  //    ...
  //       \'slug\' => string \'towns\' (length=5) // rewrite tag is %towns%
  //   public \'query_var\' => string \'towns\' (length=5) // http://example/?towns=
  
  // some taxonomy\'s arguments, it is better view it in formatted form
  // the taxonomy slug is missed in the discussion, so not sure which slug it means, but probably countries because the query_var is countries
  // ["object_type"]=> array(1) { 
  //  [0]=> string(13) "sp_categories" // linked to post type sp_categories
  // } 
  // ["rewrite"]=> array(4) { 
  //  ["slug"]=> string(7) "country" // rewrite is /%country%/
  // } 
  // ["query_var"]=> string(9) "countries" // means http://example.com/?countries= is allowed
  
  // taxonomy \'cities\' arguments
  // ["cities"]=> object(WP_Taxonomy)#2622 (26) { 
  //  ["name"]=> string(6) "cities" // slug is cities
  // ... missed in the discussion
  

  了解custom post type
  • 什么是重写标记，什么是查询变量

    add_action( \'init\', \'ws361150_debug_test_pt\' );
    function ws361150_debug_test_pt() {
        // please comment/uncomment the debug output needed
        // export an array list of all post types list
        var_dump( get_post_types() );
    
        // debug view one post type object by the following method
        $post_types = get_post_types( [], \'objects\' );
        var_dump($post_types[\'post\']); // put in the post type slug
    }
    
    // object(WP_Post_Type)[963]
    //   public \'name\' => string \'post\' (length=4) // post type slug
    //   ...
    //   public \'publicly_queryable\' => boolean true
    //   public \'query_var\' => boolean false
    //   public \'rewrite\' => boolean false // for post it is off, the settings is similar to taxonomy, if slug is set the rewrite is /%specified_slug%/, if true, it is by default /%post_slug%/, so that by default \'post\' is http://example.com/post-name/ instead of http://example.com/post_slug/post-name/
    

    有许多方法需要完成，这里显示了两个方法，一个是重写，另一个是手动修改查询。我已经用示例帖子类型测试了这两种方法，并通过将它们应用到主题函数中完美地工作。php请不要同时放置方法1和方法2，因为只有一种方法建议用于成功的测试。在方法1中，add_permastruct 和add_rewrite_rule 已使用。

    add\\u permastruct-除了settings > Permalinks 在WordPress中，如果重写标记已注册，如分类法和帖子类型，则可以使用它创建自定义URL结构，添加自定义重写规则-添加自定义重写正则表达式以匹配查询URL，在某些情况下，需要执行自定义规则来执行任务

    // objective: http://domain.com/cityname/hospitalname
    // post type: \'hospital\', assumed the rewrite tag is \'%hospital%\'
    // taxonomy: \'cities\', assumed the rewrite tag is \'%cities%\' and it is associated with hospital, otherwise, it will not work
    add_action( \'init\', \'ws365575_taxonomy_rewrite1\' );
    function ws365575_taxonomy_rewrite1() {
        // optional settings as the 3rd argument for add_permastruct
        // default
        $args = array(
            // \'with_front\'  => true,
            // \'ep_mask\'     => EP_NONE,
            // \'paged\'       => true,
            // \'feed\'        => true,
            // \'forcomments\' => false,
            // \'walk_dirs\'   => true,
            // \'endpoints\'   => true,
        );
    
        // this will need to flush the permalink cache to be effective
        // add to $wp_rewrite->extra_permastructs
        add_permastruct( \'cities_with_hospitals\', "%cities%/%hospital%", $args );
    }
    

    // objective: http://domain.com/hospitalname
    // post_type: \'hospital\', assumed the query vars is \'%hospital%\'
    // the top option tells WP to match it in higher priority before it is being regarded as not found
    add_action( \'init\', \'ws365575_taxonomy_rewrite2\' );
    function ws365575_taxonomy_rewrite2() {
        // the rule is copied from originally registered post types \'hopsital\' part and modify by following page post type\'s rewrite
    
        add_rewrite_rule(\'(.?.+?)/page/?([0-9]{1,})/?$\', \'index.php?hospital=$matches[1]&paged=$matches[2]\', \'top\');
        add_rewrite_rule(\'(.?.+?)?(:/([0-9]+))?/?$\', \'index.php?hospital=$matches[1]&page=$matches[2]\', \'top\');
    
        // because the above will override the priority, to avoid page cannot be loaded and become 404, manually add once more
        add_rewrite_rule(\'(.?.+?)/page/?([0-9]{1,})/?$\', \'index.php?pagename=$matches[1]&paged=$matches[2]\', \'top\');
        add_rewrite_rule(\'(.?.+?)?(:/([0-9]+))?/?$\', \'index.php?pagename=$matches[1]&page=$matches[2]\', \'top\');
    }
    

    **设置上述代码后，需要刷新permalink缓存。请参考以下注释**

    要确认注册的标记是否正确，可以转储$wp\\u重写全局变量。

    // the following is for optional for debug
    add_action( \'init\', \'ws365575_confirm_wp_rewrite\' );
    function ws365575_confirm_wp_rewrite() {
        global $wp_rewrite;
    
        // if xdebug is not installed, it is recommended to view in source
        var_dump($wp_rewrite);
    
        exit(); // break the code to read
    }
    

    方法2：如果访问链接，请立即手动修改查询（高级）http://domain.com/hospitalname 并使其等效于http://domain.com/hospital/hospitalname 缺少post type 信息，它需要一些逻辑来分析和工作。

    过滤器request 提供对任何查询的早期控制，并且适合执行此工作。虽然有效，但请注意，这取决于教育WP进行分析的程度。因此，必须对不同的情况进行大量测试和深入思考，例如similar name, 猜错了，异常处理。

    ***它不会吹WP，最多返回404或错误页面。以下内容通过放置在theme的函数中，在自定义帖子类型上进行测试。php

    add_filter( \'request\', \'ws361150_custom_request_query\' );
    function ws361150_custom_request_query( $query ) {
        if ( isset( $_SERVER[\'HTTP_HOST\'] ) ) {
            // build the URL in the address bar
            $requested_url  = is_ssl() ? \'https://\' : \'http://\';
            $requested_url .= $_SERVER[\'HTTP_HOST\'];
            $requested_url .= $_SERVER[\'REQUEST_URI\'];
        }
    
    
        if( url_to_postid( $_SERVER[\'REQUEST_URI\']) > 0 ) {
            // if something is found priorly, nothing to do, suppose something exists
    
            return $query;
        } else {
            // must think of a logic and test thoroughly before production
    
            // manual setup the post query by guess            
            // check if rewrite slugs match original settings (spelling...etc)
            if( $search_ID = url_to_postid( \'hospital\' . $_SERVER[\'REQUEST_URI\']) > 0 ) {
                // setup query based on source code, if match by test
    
                // check if post type name match settings
                $query[\'post_type\'] = \'hospital\';
                $query[\'hospital\'] = $query[\'name\'];
    
                // var_dump($query);
                // exit();
                return $query;
            }
        }
    
        return $query; // untouched
    }
    

    它看起来像一个简单的代码，开销更小，它在很大程度上依赖于提供的测试逻辑。

    重置永久链接（刷新缓存）

    提醒，每当更改重写段塞或规则时，都需要刷新缓存。最简单的方法是settings > permalinks 然后单击保存。如果不更新缓存，它可能会坚持旧的设置，并浪费时间进行测试。

    设置URL后需要进行其他工作，然后需要使用post_link 和post_type_link 钩子以更改的链接get_permalinks() 或get_post_permalink() 获取链接。然后链接将反映在前端或后期编辑页面上，因为WP不会自动执行此操作。