Scalr\Model\Entity\FarmRole::setupAlias PHP Метод

    public function setupAlias()
    {
        if (empty($this->alias)) {
            $aliases = [];
            /* @var $role FarmRole */
            foreach (static::findByFarmId($this->farmId) as $role) {
                $aliases[] = $role->alias;
            }
            $this->alias = $this->role->name;
            $n = 1;
            do {
                $this->alias = "{$this->role->name}-{$n}";
                $n++;
            } while (in_array($this->alias, $aliases));
        } else {
            if (count(static::find([['id' => ['$ne' => $this->id]], ['farmId' => $this->farmId], ['alias' => $this->alias]]))) {
                throw new InvalidEntityConfigurationException("Alias must be unique within a farm");
            }
        }
    }