/**
* Display 404 page and appropriate http headers
*
* @access public
* @return void
*/
public function fourohfour()
{
$ref = $this->app()->referer();
$reason = '';
$search_term = '';
$body = $this->app()->partial('fourohfour');
// The idea here is to try to figure out where the user came from
// and act accordingly. There are a few options, including:
// * mistyped URL (no referer)
// * broken bookmark (no referer)
// * broken ext. link (external referer)
// * broken int. link (internal referer)
// * search engine (search referer)
// So we try to be smart about it. Sort of.
// If we're off the mark, we still want to display something useful.
if (strlen($ref->string()) < 1) {
// mistyped URL, bad bookmark, client that doesn't pass referer string,
// malicious activity...
$reason = 'badurl';
} elseif (strpos($ref->string(), HOSTNAME)) {
// internal broken link. shit.
// TODO: log for investigation
$reason = 'internal';
} elseif ($ref->isSearchEngine()) {
// if the referer is a search engine
if (isset($ref->req()->q)) {
$search_term = $ref->req()->q;
}
$reason = 'search';
} else {
// if we're here, we really don't know why they got the 404.
$reason = 'unknown';
}
// let's not break the Internet, shall we?
$this->addHttpHeader('HTTP/1.1 404 Not Found');
$body->reason = $reason;
$body->search_term = $search_term;
$url_terms = trim(str_replace('/', ' ', $this->app()->requestUrl()));
$search_results = $this->getModule('SearchResults');
$search_results->build_results($url_terms, ['news', 'pages', 'products', 'resources', 'tutorials'], 1, 4, 'relevance|asc', false);
$body->search_results = $search_results;
$total_items = array_sum($search_results->getTotals());
if ($total_items < 1) {
$body->posts = \BlogPostSaurus::findLiveRandom(2);
$body->tutorials = \LearnTutorialSaurus::findPublicRandom(2);
$body->products = \StorefrontProductSaurus::findLiveRandom(4);
}
$this->layout()->title = "ERROR - 404 - NOT FOUND";
$this->layout()->body = $body;
return $this->layout();
}
/**
* Return a path for special shorthand in links.
*
* New link shorthand should be defined here, following the pattern
* currently used for tutorials.
*
* A hook for this can be installed by withCallbacks().
*/
protected function urlCallback($path)
{
$m = [];
if (preg_match('/^tutorials?\\/([0-9]+)$/', $path, $m)) {
if ($t = \LearnTutorialSaurus::getById($m[1])) {
return \Learn::externalLink('tutorials')->id($t->url_path);
}
}
// we didn't find anything
return null;
}
