/**
* Check if a user is subscribed to a container entity
*
* @param ElggUser $user The user to check
* @param ElggEntity $entity The container entity to check against
*
* @return boolean True => the user has a subscription, false => no subscription or error
*/
function newsletter_check_user_subscription(ElggUser $user, ElggEntity $entity)
{
$result = false;
if (!empty($user) && !empty($entity)) {
if (elgg_instanceof($user, "user") && (elgg_instanceof($entity, "site") || elgg_instanceof($entity, "group"))) {
// include all users
if (newsletter_include_existing_users()) {
// exclude if blocked
$result = !(bool) check_entity_relationship($user->getGUID(), NewsletterSubscription::BLACKLIST, $entity->getGUID());
} else {
// only if opt-in
$result = (bool) check_entity_relationship($user->getGUID(), NewsletterSubscription::SUBSCRIPTION, $entity->getGUID());
}
}
}
return $result;
}
/**
* Check if a user is subscribed to a container entity
*
* @param ElggUser $user The user to check
* @param ElggEntity $entity The container entity to check against
*
* @return boolean True => the user has a subscription, false => no subscription or error
*/
function newsletter_check_user_subscription(ElggUser $user, ElggEntity $entity)
{
if (!elgg_instanceof($user, 'user')) {
return false;
}
if (!elgg_instanceof($entity, 'site') && !elgg_instanceof($entity, 'group')) {
return false;
}
// include all users
if (newsletter_include_existing_users()) {
// exclude if blocked
return !(bool) check_entity_relationship($user->getGUID(), NewsletterSubscription::BLACKLIST, $entity->getGUID());
} else {
// only if opt-in
return (bool) check_entity_relationship($user->getGUID(), NewsletterSubscription::SUBSCRIPTION, $entity->getGUID());
}
}