我必须实施以下措施：

更改管理UI以包括我的自定义筛选器

add_action(\'wp_enqueue_media\', function () {
    wp_enqueue_script(\'media-library-taxonomy-filter\', get_stylesheet_directory_uri() . \'/assets/js/custom-media-filter.js\', array(\'media-editor\', \'media-views\'));
});

<在自定义媒体筛选器中。js我正在附加自定义选择HTML，每次更改自定义选择时，在URL中添加查询参数，并使用此参数和值重定向

jQuery(document).ready(function () {
    jQuery(\'.filter-items\').append(\'<select class="form-select" aria-label="Custom filter document_category" id="page-document_category"><option>-Choose-</option><option value="document">Document</option><option value="template">Template</option></select>\');
    jQuery(\'#page-document_category\').change(function (e) {
        insertParam(\'document_category\', this.value)
    });
    // insert and redirect with new value
    function insertParam(key, value) {
        key = encodeURIComponent(key);
        value = encodeURIComponent(value);
        // remove all other parameters
        var kvp = [];
        kvp.push(key + \'=\' + value);
        document.location.search = params;
    }

});
 

<在我的函数中添加操作。php绑定到pre_get_posts

add_action(\'pre_get_posts\', \'my_custom_filter\');

并创建自定义函数my_custom_filter 仅当我的自定义筛选器发送到URL时才更改元查询

if (!function_exists(\'my_custom_filter\')) {
    function my_custom_filter($wp_query_obj)
    {
        $url_query  = explode(\'&\', $_SERVER[\'QUERY_STRING\']);
        $params = array();
        foreach ($url_query as $param) {
            if (isset($param) && $param[0] !== \'\') {
                // prevent notice on explode() if $param has no \'=\'
                if (strpos($param, \'=\') === false) $param += \'=\';

                list($name, $value) = explode(\'=\', $param, 2);
                $params[urldecode($name)][] = urldecode($value);
                urldecode_deep($params);
            }
        }
        $found = false;
        if (isset($params[\'document_category\'])) {
            $meta_key = \'document_category\';
            $meta_value = $params[\'document_category\'][0];
            $found = true;
        }

        // here i can add more filters

        // else if ($params[\'document_type\']) {
        //    $meta_key = \'document_type\';
        //    $meta_value = $params[\'document_type\'][0];
        //    $found = true;
        // }
 
        if ($found) {
            $meta_query = array(
                array(
                    \'key\'     => $meta_key,
                    \'value\'   => $meta_value,
                    \'compare\' => \'=\',
                ),
            );
            $wp_query_obj->set(\'meta_query\', $meta_query);
            $wp_query_obj->set(\'orderby\',    \'meta_value_num\');
            $wp_query_obj->set(\'order\',      \'ASC\');
        }
        return;
    }
}