WordPress 技巧：修正自定义文章类型更新提示

在 WordPress 后台编辑自定义文章类型的时候，点击更新，或者发布，显示的提示都是“文章已更新”或者“文章已发布”。这里的「文章」怎样改成自定义文章类型的名称呢，下面这个代码可以解决这个问题：

add_filter('post_updated_messages', function($messages){
	global $post_type;

	if($post_type == 'page' || $post_type == 'post'){
		return $messages;
	}

	if(is_post_type_hierarchical($post_type)){
		$messages['page']	=  wpjam_replace_post_updated_messages($messages['page'], $post_type);
	}else{
		$messages['post']	=  wpjam_replace_post_updated_messages($messages['post'], $post_type);
	}

	return $messages;
});

function wpjam_replace_post_updated_messages($messages, $post_type){
	$labels		= get_post_type_labels(get_post_type_object($post_type));
	$label_name	= $labels->name;

	return array_map(function($message) use ($label_name){
		if($message == $label_name) return $message;

		return str_replace(
			['文章', '页面', 'post', 'Post'],
			[$label_name, $label_name, $label_name, ucfirst($label_name)],
			$message
		);
	}, $messages);
}