function Notifications_Subscription::get_instance in Notifications 6.4

Same name and namespace in other branches

1. 7 notifications.subscription.inc \Notifications_Subscription::get_instance()

Get instance of this one for certain conditions

Parameters

$params: Parameters to add to the subscription type to get an instance of itself

$return_self: Return itself if no instance found

File

includes/notifications_subscription.class.inc, line 746

Drupal Notifications Framework - Default class file

Class

Notifications_Subscription

Message destination class

Code

function get_instance($params = array(), $return_self = FALSE) {
  $params += array(
    'type' => $this->type,
  );
  $cache =& messaging_static('Notifications_Subscription_instances');
  $cache_key = notifications_array_serialize($params);
  if (!isset($cache[$cache_key])) {
    $subs = notifications_get_subscriptions($params);
    $cache[$cache_key] = $subs ? current($subs) : FALSE;
  }
  return $cache[$cache_key] ? $cache[$cache_key] : ($return_self ? $this : NULL);
}