这与this question.

我们必须加入check_ajax_referer 仅处理内部链接功能。然后我们为注册一个操作pre_get_posts 将搜索扩展到草稿和待处理的帖子。

我们仍然不会得到很好的永久链接，因为它们被排除在get_permalink. 因此，我们也为此注册了一个过滤器，并再次向WordPress请求永久链接，但带有伪造的帖子状态。

As代码：

add_action( \'check_ajax_referer\', \'internal_links_for_drafts\' );

/**
 * Extend search for internal links to \'draft\' and \'pending\' statuses.
 *
 * @wp-hook check_ajax_referer
 * @wp-hook pre_get_posts
 * @param string|WP_Query $var
 * @return boolean|void
 */
function internal_links_for_drafts( $var )
{
    if ( \'check_ajax_referer\' === current_filter() && \'internal-linking\' === $var )
        return add_action( \'pre_get_posts\', __FUNCTION__ );

    // now we are in the \'pre_get_posts\' action.
    $var->set( \'post_status\', array( \'publish\', \'pending\', \'draft\' ) );
    remove_action( \'pre_get_posts\', __FUNCTION__ );
    add_filter( \'post_link\', \'draft_permalink\', 10, 2 );
}
/**
 * Get permalink for drafts and pending posts.
 *
 * Dangerous, because their title can still change.
 *
 * @param  string $permalink
 * @param  object $post
 * @return string
 */
function draft_permalink( $permalink, $post )
{
    remove_filter( current_filter(), __FUNCTION__ );

    // swap status temporary
    $original_status   = $post->post_status;
    $post->post_status = \'publish\';
    $url               = get_permalink( $post );
    $post->post_status = $original_status;

    return $url;
}