Scalr\Model\Entity\Script::getLatestVersion PHP Method

    public function getLatestVersion()
    {
        /* @var $version ScriptVersion */
        $version = ScriptVersion::findOne([['scriptId' => $this->id]], null, ['version' => false]);
        if (!$version) {
            throw new Exception(sprintf('No version found for script %d', $this->id));
        }
        return $version;
    }

 /**
  * Creates versions for specified script from versions definitions
  *
  * @param Script    $script         Script for witch created versions
  * @param array     $versionsData   Versions definitions
  *
  * @return ScriptVersion[]
  *
  * @throws Exception
  */
 public static function generateVersions(Script $script, array $versionsData)
 {
     $versions = [];
     try {
         $latestVersion = $script->getLatestVersion()->version + 1;
     } catch (Exception $e) {
         $latestVersion = 1;
     }
     foreach ($versionsData as $versionData) {
         $versionData['scriptId'] = $script->id;
         $versionData['version'] = $latestVersion++;
         $versionData['changedById'] = static::$testUserId;
         $versionData['changedByEmail'] = static::$user->getEmail();
         $versions[] = static::createEntity(new ScriptVersion(), $versionData);
     }
     return $versions;
 }