function MapFieldItemList::equals

Overrides FieldItemList::equals

File

core/lib/Drupal/Core/Field/MapFieldItemList.php, line 13

Class

MapFieldItemList

Defines an item list class for map fields.

Namespace

Code

public function equals(FieldItemListInterface $list_to_compare) {
  $count1 = count($this);
  $count2 = count($list_to_compare);
  if ($count1 === 0 && $count2 === 0) {
    // Both are empty we can safely assume that it did not change.
    return TRUE;
  }
  if ($count1 !== $count2) {
    // The number of items is different so they do not have the same values.
    return FALSE;
  }
  // The map field type does not have any property defined (because they are
  // dynamic), so the only way to evaluate the equality for it is to rely
  // solely on its values.
  $value1 = $this->getValue();
  $value2 = $list_to_compare->getValue();
  return $value1 == $value2;
}