function unique_field_ajax_is_unique in Unique field ajax 2.x

Same name and namespace in other branches

1. 8 unique_field_ajax.module \unique_field_ajax_is_unique()

Test if the field value already exist in the database.

Parameters

string $entity_type: Entity type name.

string $lang_code: Language code.

string $field_name: Field name.

string $field_value: Field value.

string $bundle: Bundle.

bool|null $is_unique_per_lang: Is unique per lang flag.

\Drupal\Core\Entity\EntityBase $entity: The entity object.

Return value

bool|string Boolean TRUE if the value is unique. In any other case, the entity ID of the entity that has the same value.

Throws

\Drupal\Component\Plugin\Exception\PluginNotFoundException

2 calls to unique_field_ajax_is_unique()

unique_field_ajax_validate_unique in ./unique_field_ajax.module

Element Validate callback to validate a field.

_unique_field_ajax_process in ./unique_field_ajax.module

Attach ajax to unique field.

File

./unique_field_ajax.module, line 528

Unique value for cck fields check module.

Code

function unique_field_ajax_is_unique(string $entity_type, string $lang_code, string $field_name, string $field_value, string $bundle, ?bool $is_unique_per_lang, EntityBase $entity) {
  $entity_type_definition = Drupal::entityTypeManager()
    ->getDefinition($entity_type);
  $query = Drupal::entityQuery($entity_type)
    ->range(0, 1)
    ->condition($field_name, $field_value, '=');
  if (!$entity
    ->isNew()) {
    $query
      ->condition($entity_type_definition
      ->getKey('id'), $entity
      ->id(), '<>');
  }

  // Test if the entity has a bundle.
  if (!empty($entity_type_definition
    ->getKey('bundle'))) {
    $query
      ->condition($entity_type_definition
      ->getKey('bundle'), $bundle, '=');
  }

  // Test unique per language.
  if ($is_unique_per_lang) {
    $query
      ->condition('langcode', $lang_code);
  }
  $entities = $query
    ->execute();
  if (!empty($entities)) {
    return array_shift($entities);
  }
  return TRUE;
}