用于设置特色图像的Ajax处理程序。

原型

wp_ajax_set_post_thumbnail()

源文件

路径:wp-admin/includes/ajax-actions.php

<?php
...
function wp_ajax_set_post_thumbnail() {
	$json = ! empty( $_REQUEST['json'] ); // New-style request
	$post_ID = intval( $_POST['post_id'] );
	if ( ! current_user_can( 'edit_post', $post_ID ) )
		wp_die( -1 );
	$thumbnail_id = intval( $_POST['thumbnail_id'] );
	if ( $json )
		check_ajax_referer( "update-post_$post_ID" );
	else
		check_ajax_referer( "set_post_thumbnail-$post_ID" );
	if ( $thumbnail_id == '-1' ) {
		if ( delete_post_thumbnail( $post_ID ) ) {
			$return = _wp_post_thumbnail_html( null, $post_ID );
			$json ? wp_send_json_success( $return ) : wp_die( $return );
		} else {
			wp_die( 0 );
		}
	}
	if ( set_post_thumbnail( $post_ID, $thumbnail_id ) ) {
		$return = _wp_post_thumbnail_html( $thumbnail_id, $post_ID );
		$json ? wp_send_json_success( $return ) : wp_die( $return );
	}
	wp_die( 0 );
}
...
?>

其他

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