/**
* Subscribe specific user to this message
*
* @param User $user
* @return boolean
*/
function subscribeUser(User $user)
{
if ($this->isNew()) {
throw new Error('Can\'t subscribe user to object that is not saved');
}
// if
if ($this->isSubscriber($user)) {
return true;
}
// if
$this->subscribers = null;
// New subscription
$subscription = new ObjectSubscription();
$subscription->setObjectId($this->getId());
$subscription->setObjectManager(get_class($this->manager()));
$subscription->setUserId($user->getId());
return $subscription->save();
}
