Question

我正在尝试在Wordpress中添加add_action，以便在保存类型为'fep_message'的帖子时，检查与post_parent ID关联的任何'_fep_delete_by_'键，然后从wp_post_meta表中删除它们。这是我为此而构建的代码，但它不起作用：

exec

完成这项工作的适当方法是什么？

Answer 1

在wordpress中使用save_post挂钩。你可以在这里找到更多信息

https://codex.wordpress.org/Plugin_API/Action_Reference/save_post

然后应该将代码更改为：

add_action('save_post', 'undelete_thread');

function undelete_thread($post_id) {
    global $wpdb;
    global $post; 

    if ($post->post_type = 'fep_message'){
        $participants = fep_get_participants( $post->post_parent );
        foreach( $participants as $participant ) 
        {
            $query ="SELECT meta_id FROM wp_postmeta WHERE post_id = %s and `meta_key` = '_fep_delete_by_%s'";
            $queryp = $wpdb->prepare($query, array($post->post_parent, $participant));
            if (!empty($queryp)) {
                delete_post_meta($queryp,'_fep_delete_by_' . $participant); 
            }
        }
    }
}

Answer 2

谢谢Kris，你是对的，save_post有效。我更多地简化了这个功能并且运行良好：

add_action('save_post', 'undelete_thread');
function undelete_thread($post_id) {
    $post = get_post($post_id);
    if ($post->post_type = 'fep_message'){
        $participants = fep_get_participants( $post->post_parent );
        foreach( $participants as $participant )        
        {
            delete_post_meta($post->post_parent,'_fep_delete_by_'. $participant );    
        }
    }
}

保存post-type时运行在wordpress中运行函数

2 个答案: