我有一个称为“运动”的分类法，包括足球、橄榄球、网球。。。我想实现的是，当（例如）一篇有“足球”一词的帖子被丢弃，访问者尝试访问它时，它将被重定向到（出于SEO目的）：mywebsite。com/sports/football/。

我花了很多天的时间想知道如何做到这一点，但都没有成功。下面是我尝试的代码示例：

    function redirect_trashed_posts(){
    if( is_404() ){

        global $wp_query, $wpdb, $post;

        $post_id = $post->ID;

        if( is_object_in_term( $post_id, \'sports\' ) ) {

            $terms = get_the_terms( $post_id, \'sports\' );
            $term = array_shift( $terms );
            $slug = $term->slug;

            $redirect_to = get_option(\'siteurl\') . \'/sports/\' . $slug . \'/\';
            wp_redirect( $redirect_to, 301 );
            exit();
        }
    }
}
add_action(\'template_redirect\', \'redirect_trashed_posts\');

主要问题是，我无法获取垃圾帖子的ID，因此，用于检查帖子是否属于“体育”的if语句不起作用，“get\\u The\\u terms（）”没有返回任何内容。我还试图通过slug获取数据，但没有成功。

谢谢你的帮助。

SOLUTION

function redirect_trashed_posts(){
    if( is_404() ){ // if page does not exist anymore

        global $wpdb; // so we can talk to db

        // getting current slug__trashed
        // WP append __trashed to trshed posts
        $trashed_post_slug = trim($_SERVER[\'REQUEST_URI\'], \'/\') . \'__trashed\'; 

        $post_data = $wpdb->get_row( // requesting ID & post_status from DB
            "
            SELECT ID, post_status
            FROM $wpdb->posts
            WHERE post_name = \'$trashed_post_slug\'
            "
        );

        $post_id = $post_data->ID; // Getting the ID
        $post_status = $post_data->post_status; // Grabbing the post_status

        if ( $post_status == \'trash\'){ // if we are currently on a trashed post
            $terms = get_the_terms( $post_id, \'sports\'); // Getting Term, it\'s an array of objects
            $term = array_shift( $terms ); // Getting first object. I have just one 
            $term_slug = $term->slug; // Getting term slug
            $redirect_to = get_option(\'siteurl\') . \'/sports/\' . $term_slug . \'/\'; // full url
            wp_redirect( $redirect_to, 301 ); // 301 redirection
            exit();
        }

    }
}
add_action(\'template_redirect\', \'redirect_trashed_posts\');

谢谢：D

$post_id = url_to_postid($_SERVER[\'REQUEST_URI\']);