public function beforeCompile() { parent::beforeCompile(); // Get container builder $builder = $this->getContainerBuilder(); // Get validators service $factory = $builder->getDefinition($this->prefix('validators')); foreach (array_keys($builder->findByTag(self::TAG_VALIDATOR)) as $serviceName) { // Register validator to service $factory->addSetup('registerValidator', ['@' . $serviceName, $serviceName]); } }