public static function tagValues()
{
$values = [];
$faqs = Faq::select('tags')->get();
foreach ($faqs as $index => $faq) {
$tags = $faq->tags;
foreach ($tags as $index => $tag) {
if (!in_array($tag, $values)) {
$values[] = $tag;
}
}
}
sort($values);
return $values;
}
