function RulesEntityController::delete

Overridden to also delete tags and events.

See also

EntityAPIControllerExportable::delete()

File

includes/rules.core.inc, line 265

Class

RulesEntityController

Make sure loaded rule configs are instantiated right.

Code

public function delete($ids, DatabaseTransaction $transaction = NULL) {
    $transaction = isset($transaction) ? $transaction : db_transaction();
    // Use entity-load as ids may be the names as well as the ids.
    $configs = $ids ? entity_load('rules_config', $ids) : array();
    if ($configs) {
        foreach ($configs as $config) {
            db_delete('rules_trigger')->condition('id', $config->id)
                ->execute();
            db_delete('rules_tags')->condition('id', $config->id)
                ->execute();
            db_delete('rules_dependencies')->condition('id', $config->id)
                ->execute();
        }
    }
    $return = parent::delete($ids, $transaction);
    // Stop event dispatchers when deleting the last rule of an event set.
    $processed = array();
    foreach ($configs as $config) {
        if ($config->getPluginName() != 'reaction rule') {
            continue;
        }
        foreach ($config->events() as $event_name) {
            // Only process each event once.
            if (!empty($processed[$event_name])) {
                continue;
            }
            $processed[$event_name] = TRUE;
            // Check if the event handler implements the event dispatcher interface.
            $handler = rules_get_event_handler($event_name, $config->getEventSettings($event_name));
            if (!$handler instanceof RulesEventDispatcherInterface) {
                continue;
            }
            // Only stop an event dispatcher if there are no rules for it left.
            if ($handler->isWatching() && !rules_config_load_multiple(FALSE, array(
                'event' => $event_name,
                'plugin' => 'reaction rule',
                'active' => TRUE,
            ))) {
                $handler->stopWatching();
            }
        }
    }
    return $return;
}