function Extract::transform

Overrides ProcessPluginBase::transform

File

core/modules/migrate/src/Plugin/migrate/process/Extract.php, line 70

Class

Extract

Extracts a value from an array.

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
  if (!is_array($value)) {
    throw new MigrateException(sprintf("Input should be an array, instead it was of type '%s'", gettype($value)));
  }
  $new_value = NestedArray::getValue($value, $this->configuration['index'], $key_exists);
  if (!$key_exists) {
    if (array_key_exists('default', $this->configuration)) {
      $new_value = $this->configuration['default'];
    }
    else {
      throw new MigrateException(sprintf("Array index missing, extraction failed for '%s'. Consider adding a `default` key to the configuration.", Variable::export($value)));
    }
  }
  return $new_value;
}