function FieldInstance::initializeIterator

Overrides SqlBase::initializeIterator

File

core/modules/field/src/Plugin/migrate/source/d7/FieldInstance.php, line 97

Class

FieldInstance

Drupal 7 field instances source from database.

Namespace

Code

protected function initializeIterator() {
  $results = $this->prepareQuery()
    ->execute()
    ->fetchAll();
  // Group all instances by their base field.
  $instances = [];
  foreach ($results as $result) {
    $instances[$result['field_id']][] = $result;
  }
  // Add the array of all instances using the same base field to each row.
  $rows = [];
  foreach ($results as $result) {
    $result['instances'] = $instances[$result['field_id']];
    $rows[] = $result;
  }
  return new \ArrayIterator($rows);
}