Wordpress -将上传的图像附加到post

Question

我使用Wordpress插件Ajax上传通过Ajax上传图片，文章是在表单提交和上传后创建的。我的问题是，我需要附加那些上传的图片到创建的帖子。我有post ID和附件ID，是否有一个php方法可以使用它们的ID来附加它们？谢谢你给我的回复。

Answer 1

没试过。但也许你可以用这个。它是从法典和文件函数结合而来的

// the ID of the attachment
$filename = get_attached_file( $attachment_id ); // Full path

// The ID of the post this attachment is for.
$parent_post_id = 37;

// Check the type of file. We'll use this as the 'post_mime_type'.
$filetype = wp_check_filetype( basename( $filename ), null );

// Get the path to the upload directory.
$wp_upload_dir = wp_upload_dir();

// Prepare an array of post data for the attachment.
$attachment = array(
  'guid'           => $wp_upload_dir['url'] . '/' . basename( $filename ),
  'post_mime_type' => $filetype['type'],
  'post_title'     => preg_replace( '/\.[^.]+$/', '', basename( $filename ) ),
  'post_content'   => '',
  'post_status'    => 'inherit'
);

// Insert the attachment.
$attach_id = wp_insert_attachment( $attachment, $filename, $parent_post_id );

// Make sure that this file is included, as wp_generate_attachment_metadata() depends on it.
require_once( ABSPATH . 'wp-admin/includes/image.php' );

// Generate the metadata for the attachment, and update the database record.
$attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
wp_update_attachment_metadata( $attach_id, $attach_data );

Answer 2

如果已经上载了附件/媒体，并且只想将其“绑定”到现有的帖子，只需设置附件/媒体的post_parent字段：

wp_update_post(
    array(
        'ID' => $attachment_id,
        'post_parent' => $post_id
    )
);