用于保存向后兼容附件属性的Ajax处理程序。

原型

wp_ajax_save_attachment_compat()

源文件

路径:wp-admin/includes/ajax-actions.php

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<?php
...
function wp_ajax_save_attachment_compat() {
	if ( ! isset( $_REQUEST['id'] ) )
		wp_send_json_error();

	if ( ! $id = absint( $_REQUEST['id'] ) )
		wp_send_json_error();

	if ( empty( $_REQUEST['attachments'] ) || empty( $_REQUEST['attachments'][ $id ] ) )
		wp_send_json_error();
	$attachment_data = $_REQUEST['attachments'][ $id ];

	check_ajax_referer( 'update-post_' . $id, 'nonce' );

	if ( ! current_user_can( 'edit_post', $id ) )
		wp_send_json_error();

	$post = get_post( $id, ARRAY_A );

	if ( 'attachment' != $post['post_type'] )
		wp_send_json_error();

	/** This filter is documented in wp-admin/includes/media.php */
	$post = apply_filters( 'attachment_fields_to_save', $post, $attachment_data );

	if ( isset( $post['errors'] ) ) {
		$errors = $post['errors']; // @todo return me and display me!
		unset( $post['errors'] );
	}

	wp_update_post( $post );

	foreach ( get_attachment_taxonomies( $post ) as $taxonomy ) {
		if ( isset( $attachment_data[ $taxonomy ] ) )
			wp_set_object_terms( $id, array_map( 'trim', preg_split( '/,+/', $attachment_data[ $taxonomy ] ) ), $taxonomy, false );
	}

	if ( ! $attachment = wp_prepare_attachment_for_js( $id ) )
		wp_send_json_error();

	wp_send_json_success( $attachment );
}

...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/wp_ajax_save_attachment_compat/