/**
* Set the reference
*
* @param string $key
* @param string $reference
*
* @throws \InvalidArgumentException
*/
public function setReference($key, $reference)
{
if ($this->getModel($reference) === null) {
throw new \InvalidArgumentException(sprintf('The reference "%s" does not exist', $reference));
}
if (($model = $this->getModel($key)) === null) {
$model = new CacheModel();
}
$model->tstamp = time();
$model->uid = $key;
$model->reference = $reference;
$model->obsolete = '';
$model->save();
}
