public function actionNames()
{
$ids = $this->getQuery('campaignIds');
if (empty($ids)) {
return [];
}
$ids = explode(',', $ids);
$campaignIds = MongodbUtil::toMongoIdList($ids);
$campaigns = Campaign::getByIds($campaignIds);
$names = [];
foreach ($campaigns as $campaign) {
$names[] = $campaign->name;
}
return $names;
}