public function transform($entity)
    {
        if (null === $entity) {
            return '';
        }
        if (!is_subclass_of($entity, $this->entityClass)) {
            throw new \InvalidArgumentException(sprintf(
                'Unsupported entity "%s" into "%s" loader.',
                get_class($entity),
                __CLASS__
            ));
        }

        return $entity->getId();
    }
public function transform($entity)
    {
        if (null === $entity) {
            return '';
        }
        if (!is_subclass_of($entity, $this->entityClass)) {
            throw new \InvalidArgumentException(sprintf(
                'Unsupported entity "%s" into "%s" loader.',
                get_class($entity),
                __CLASS__
            ));
        }

        return $entity->getId();
    }
public function transform ( $ entity ) { if ( null === $ entity ) { return '' ; } if ( ! is_subclass_of ( $ entity , $ this -> entityClass ) ) { throw new \ InvalidArgumentException ( sprintf ( 'Unsupported entity "%s" into "%s" loader.' , get_class ( $ entity ) , __CLASS__ ) ) ; } return $ entity -> getId ( ) ; }
Model -> View

@see DataTransformerInterface::transform()
Model - > View