Add rel="next" and rel="prev" tags for pagination in head section

[PWaddict]

To easily add rel="next" and rel="prev" tags for pagination in head section insert the following hook to your site/ready.php:

$wire->addHookAfter('Page::render', function(HookEvent $event) {

  $page = $event->object;
  if($page->template == 'admin') return;

  $tags = '';
  $config = wire('config');

  if($config->urls->httpNext) {
    $tags .= "<link rel='next' href='{$config->urls->httpNext}'>";
  }

  if($config->urls->httpPrev) {
    $tags .= "<link rel='prev' href='{$config->urls->httpPrev}'>";
  }

  $event->return = str_replace("</head>", $tags . "</head>", $event->return);

});