public function EntityFieldVariable::evaluate in Business Rules 2.x

Same name and namespace in other branches

1. 8 src/Plugin/BusinessRulesVariable/EntityFieldVariable.php \Drupal\business_rules\Plugin\BusinessRulesVariable\EntityFieldVariable::evaluate()

Evaluate the variable.

Parameters

\Drupal\business_rules\Entity\Variable $variable: The variable to be evaluated.

\Drupal\business_rules\Events\BusinessRulesEvent $event: The dispatched event.

Return value

\Drupal\business_rules\VariableObject|\Drupal\business_rules\VariablesSet The evaluated variables.

Overrides BusinessRulesVariablePlugin::evaluate

File

src/Plugin/BusinessRulesVariable/EntityFieldVariable.php, line 94

Class

EntityFieldVariable

Class EntityValue.

Namespace

Drupal\business_rules\Plugin\BusinessRulesVariable

Code

public function evaluate(Variable $variable, BusinessRulesEvent $event) {
  $field_name = $variable
    ->getSettings('field');
  $data = $variable
    ->getSettings('data');
  $variableSet = new VariablesSet();
  switch ($data) {
    case self::CURRENT_DATA:
      $entity = $event
        ->getArgument('entity');
      break;
    case self::ORIGINAL_DATA:
      $entity = $event
        ->getArgument('entity_unchanged');
      break;
  }
  try {
    $value = $entity
      ->get($field_name)
      ->getValue();

    // Check if value is a entity reference.

    /** @var \Drupal\field\Entity\FieldConfig $field_definition */
    $field_definition = $entity
      ->getFieldDefinition($field_name);
    if ($field_definition
      ->getType() == 'entity_reference') {
      $entity_references = $entity
        ->get($field_name)
        ->referencedEntities();
      foreach ($entity_references as $key => $item) {
        $value[$key]['entity_reference_label'] = $item
          ->label();
      }
    }
  } catch (\Exception $e) {
    throw $e;
  }
  $arr_label = [];
  if (count($value) === 1) {
    if (isset($value[0]['value'])) {
      $value = $value[0]['value'];
    }
    elseif (isset($value[0]['target_id'])) {
      $value = $value[0]['target_id'];
    }
    else {
      $value = NULL;
    }
  }
  else {
    $arr_value = [];
    foreach ($value as $key => $item) {
      if (isset($item['value'])) {
        $arr_value[] = $item['value'];
        $multi_val = new VariableObject($variable
          ->id() . "[{$key}]", $item['value'], $variable
          ->getType());
      }
      elseif (isset($item['target_id'])) {
        $arr_value[] = $item['target_id'];
        $multi_val = new VariableObject($variable
          ->id() . "[{$key}]", $item['target_id'], $variable
          ->getType());
        $title = new VariableObject($variable
          ->id() . "[{$key}]->label", $item['entity_reference_label'], $variable
          ->getType());
        $variableSet
          ->append($title);
        $arr_label[] = $item['entity_reference_label'];
      }
      else {
        $arr_value[] = NULL;
        $multi_val = new VariableObject($variable
          ->id() . "[{$key}]", NULL, $variable
          ->getType());
      }
      $variableSet
        ->append($multi_val);
    }
    $value = $arr_value;
  }
  $variableObject = new VariableObject($variable
    ->id(), $value, $variable
    ->getType());
  $variableSet
    ->append($variableObject);
  if (count($arr_label)) {
    $variableObject = new VariableObject($variable
      ->id() . '->label', $arr_label, $variable
      ->getType());
    $variableSet
      ->append($variableObject);
  }
  return $variableSet;
}