delete_attachment
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概述
delete_attachment 是一个 WordPress 动作钩子，在 wp_delete_attachment() 函数开始时触发，用于在附件删除前执行自定义操作。自 WordPress 2.8 起，该钩子在删除数据库和文件系统内容之前触发，增强了实用性。
关键要点
- 触发时机：在 wp_delete_attachment() 函数开始时，附件被删除之前触发。
- 参数：$post_id（附件 ID）和 $post（WP_Post 对象），后者在 WordPress 5.5.0 版本中添加。
- 历史变化：WordPress 2.8 之前，该钩子在附件删除后触发，之后改为删除前触发，提高了可用性。
- 相关函数：与 wp_delete_attachment() 函数关联，用于处理附件的删除或移至回收站。
代码示例
function wpdocs_delete_attachment( $post_id ) {
// Do something before attachment deleted
// get attached file dir
$file = get_attached_file( $post_id );
// get file name of attachment to be deleted
$file_name = wp_basename( $file );
}
add_action( 'delete_attachment', 'wpdocs_delete_attachment' );
原文内容
Fires before an attachment is deleted, at the start of wp_delete_attachment() .
Parameters
$post_idint-
Attachment ID.
$postWP_Post-
Post object.
Source
do_action( 'delete_attachment', $post_id, $post );
Skip to note 2 content
shuvo586
Below is the basic example how delete_attachment action works.
function wpdocs_delete_attachment( $post_id ) { // Do something before attachment deleted // get attached file dir $file = get_attached_file( $post_id ); // get file name of attachment to be deleted $file_name = wp_basename( $file ); } add_action( 'delete_attachment', 'wpdocs_delete_attachment' );