public function deleteAction()
{
SxCms_Acl::requireAcl('subscriptions', 'subscription.delete');
$subscription_id = $this->_getParam('id');
$proxy = new SxCms_Event_Subscription_DataMapper();
$subscription = $proxy->getSubscriptionById($subscription_id);
$Subscription = new SxCms_Event_Subscription();
$Subscription->setSubscriptionId($subscription_id);
$Subscription->delete();
$flashMessenger = $this->_helper->getHelper('FlashMessenger');
$flashMessenger->addMessage($this->admin_tmx->_('subscriptiondeleted'));
$this->_helper->redirector->gotoSimple('list', 'event_subscription', null, array('id' => $subscription->getEventId()));
}