生成permalinks

Question

我希望permalinks像youtube一样，由字母和数字(9位)生成，我修改了这个代码

add_filter( 'wp_unique_post_slug', 'unique_slug_108286', 10, 4 );
function unique_slug_108286( $slug) { 
    $n=4;
    $slug = bin2hex(random_bytes($n));  //just an example
    return $slug;
}

所以它起作用了，给了我一个随机的段塞，但问题是每次我在后端输入帖子时都会改变这个段塞，所以我需要生成它一次，并且是唯一的。

我也找到了这个解决方案

add_filter( 'wp_unique_post_slug', 'unique_slug_so_11762070', 10, 6 );

function unique_slug_so_11762070( $slug, $post_ID, $post_status, $post_type, $post_parent, $original_slug ) {
    $new_slug = so_11762070_unique_post_slug('guid');
    return $new_slug;
}

# From: https://stackoverflow.com/a/11762698
function so_11762070_unique_post_slug($col,$table='wp_posts'){
     global $wpdb;

     $alphabet = array_merge( range(0, 9), range('a','z') );

     $already_exists = true;
     do {

         $guidchr = array();
         for ($i=0; $i<32; $i++)
         $guidchr[] = $alphabet[array_rand( $alphabet )];


         $guid = sprintf( "%s", implode("", array_slice($guidchr, 0, 12, true)) );

       // check that GUID is unique
       $already_exists = (boolean) $wpdb->get_var("
       SELECT COUNT($col) as the_amount FROM $table WHERE $col = '$guid'
       ");

      } while (true == $already_exists);

     return $guid;
}

Answer 1

wp_unique_post_slug过滤器的第二个参数是后置id。在第一次创建帖子时，您可以使用它生成一次弹格。

Method 1:

add_filter( 'wp_unique_post_slug', 'unique_slug_108286', 10, 2 );
function unique_slug_108286( $slug, $postId ) {
    if ( ! $postId ) {
        $n = 4;
        $slug = bin2hex( random_bytes( $n ) );  //just an example
    }
    return $slug;
}

另一种方法是使用后置元来指示是否生成了弹状体。

Method 2:

add_filter( 'wp_unique_post_slug', 'unique_slug_108286', 10, 2 );
function unique_slug_108286( $slug, $postId ) {
    if ( $postId && ! get_post_meta( $postId, 'slug_generated', true ) ) {
        $n = 4;
        $slug = bin2hex( random_bytes( $n ) );  //just an example
        update_post_meta( $postId, 'slug_generated', true );
    }
    return $slug;
}

Answer 2

好的，我终于找到了解决办法

function append_slug($data) {
    global $post_ID;

    if (empty($data['post_name'])) {
        $n=4;
        $data['post_name'] = bin2hex(random_bytes($n));
    }

    return $data;
}

谢谢大家的帮助