public function facebook_filter($meta_tags)
{
$meta_tags['http://ogp.me/ns#type'] = $this->type(false);
$meta_tags['http://ogp.me/ns#title'] = $this->og_title(false);
// Filter the locale too because the Facebook plugin locale code is not as good as ours.
$meta_tags['http://ogp.me/ns#locale'] = $this->locale(false);
$ogdesc = $this->description(false);
if (!empty($ogdesc)) {
$meta_tags['http://ogp.me/ns#description'] = $ogdesc;
}
return $meta_tags;
}