Advanced Custom Fields Multilingual (ACFML)：PHP 警告 – Attempt to read property “post_content” on null

状态: 已解决
报告针对: Advanced Custom Fields Multilingual 2.0.5
解决于: Advanced Custom Fields Multilingual 2.2.0
相关插件/主题: Advanced Custom Fields (ACF)
主题标签: Compatibility

问题概述

在某些情况下，Advanced Custom Fields Multilingual (ACFML) 插件在使用 ACF 字段时可能会遇到 PHP 警告：

Attempt to read property "post_content" on null in plugins .../acfml/classes/class-wpml-acf-repeater-shuffle.php on line 249

临时解决方法

在继续操作之前，请确保对您的站点进行完整备份。

打开 …/acfml/classes/class-wpml-acf-repeater-shuffle.php 文件。

找到第 244 行。

替换：

	private function isChildOfRepeaterField( $key, $postId ) {
		$acfFieldObject = get_field_object( $key, $postId );
		if ( isset( $acfFieldObject['parent'] )
			 && $acfFieldObject['parent'] > 0 ) {
			$fieldParent        = get_post( $acfFieldObject['parent'] );
			$fieldParentContent = maybe_unserialize( $fieldParent->post_content );
			if ( isset( $fieldParentContent['type'] ) && 'repeater' === $fieldParentContent['type'] ) {
				return true;
			}
		}
		return false;
	}

替换为：

private function isChildOfRepeaterField( $key, $postId ) {
    $acfFieldObject = get_field_object( $key, $postId );
    if ( isset( $acfFieldObject['parent'] ) ) {
        if ( is_numeric( $acfFieldObject['parent'] ) && $acfFieldObject['parent'] > 0 ) {
            $fieldParent = get_post( $acfFieldObject['parent'], $postId );
            if ( $fieldParent ) {
                $fieldParentContent = maybe_unserialize( $fieldParent->post_content );
                if ( isset( $fieldParentContent['type'] ) && 'repeater' === $fieldParentContent['type'] ) {
                    return true;
                }
            }
        } elseif ( is_string( $acfFieldObject['parent'] ) ) {
            $fieldParent = get_field_object( $acfFieldObject['parent'], $postId );
            if ( isset( $fieldParent['type'] ) && 'repeater' === $fieldParent['type'] ) {
                return true;
            }
        }
    }
    return false;
}

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