objectManager = $objectManager; } /** * {@inheritdoc} * @return array Format: array(array('value' => , 'label' => ''), ...) * @throws \InvalidArgumentException * @throws \UnexpectedValueException */ public function evaluate(array $data) { if (!isset($data['model'])) { throw new \InvalidArgumentException('Options source model class is missing.'); } $modelClass = $data['model']; $modelInstance = $this->objectManager->get($modelClass); if (!$modelInstance instanceof \Magento\Framework\Data\OptionSourceInterface) { throw new \UnexpectedValueException( sprintf("Instance of the options source model is expected, got %s instead.", get_class($modelInstance)) ); } $result = []; foreach ($modelInstance->toOptionArray() as $value => $label) { if (is_array($label)) { $result[] = $label; } else { $result[] = ['value' => $value, 'label' => $label]; } } return $result; } }