public function pref($key, $value = null, $type = 'string')
{
if (isset($value)) {
$this->preferences()->updateOrCreate(['key' => $key], ['value' => $this->cast($value, $type), 'type' => $type]);
return $value;
}
$default = Preference::getDefault($this, $key);
return ($pref = $this->preferences()->forKey($key)->first()) ? $pref->value() : $default->value();
}
