WackoWiki

View source for Re: Disable page versioning in permalink

I created a hashlink action. It uses the hashid permalink and automatically displays the page title.

%%(php)
<?php

if (!defined('IN_WACKO'))
{
	exit;
}

/*
	USAGE:
	{{hashlink id="QmdteTNEaOo"}}
	{{hashlink id="QmdteTNEaOo" text="Custom Title"}}

	Output:
	<a href="/QmdteTNEaOo">Page Title</a>
*/

if (empty($id))
{
	return;
}

$id = trim($id);

try
{
	$hashids = new \Hashids\Hashids($this->db->hashid_seed);
	$ids = $hashids->decode($id);
}
catch (\Throwable $e)
{
	echo htmlspecialchars($id, ENT_QUOTES, 'UTF-8');
	return;
}

if (!is_array($ids) || count($ids) < 3)
{
	echo htmlspecialchars($id, ENT_QUOTES, 'UTF-8');
	return;
}

$page_id	= (int) $ids[0];
$version_id	= (int) $ids[1];
$check		= (int) $ids[2];

sscanf(hash('sha1', $page_id . $this->db->hashid_seed . $version_id), '%7x', $expected_check);

if ($check !== (int) $expected_check)
{
	echo htmlspecialchars($id, ENT_QUOTES, 'UTF-8');
	return;
}

// get page title
$page = $this->db->load_single(
	"SELECT page_id, tag, title " .
	"FROM " . $this->prefix . "page " .
	"WHERE page_id = " . $page_id . " " .
	"LIMIT 1"
);

if (!$page)
{
	echo htmlspecialchars($id, ENT_QUOTES, 'UTF-8');
	return;
}

// link text
if (!empty($text))
{
	$link_text = $text;
}
else if (!empty($page['title']))
{
	$link_text = $page['title'];
}
else
{
	$link_text = $page['tag'];
}

// permalink URL
$url = $this->href('', $id, '', '', '', false);

echo '<a href="' . htmlspecialchars($url, ENT_QUOTES, 'UTF-8') . '">' .
	htmlspecialchars($link_text, ENT_QUOTES, 'UTF-8') .
	'</a>';
%%