public function RobotFormBase::exists in Examples for Developers 8

Same name and namespace in other branches

1. 3.x modules/config_entity_example/src/Form/RobotFormBase.php \Drupal\config_entity_example\Form\RobotFormBase::exists()

Checks for an existing robot.

Parameters

string|int $entity_id: The entity ID.

array $element: The form element.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

Return value

bool TRUE if this format already exists, FALSE otherwise.

File

config_entity_example/src/Form/RobotFormBase.php, line 131

Class

RobotFormBase

Class RobotFormBase.

Namespace

Drupal\config_entity_example\Form

Code

public function exists($entity_id, array $element, FormStateInterface $form_state) {

  // Use the query factory to build a new robot entity query.
  $query = $this->entityStorage
    ->getQuery();

  // Query the entity ID to see if its in use.
  $result = $query
    ->condition('id', $element['#field_prefix'] . $entity_id)
    ->execute();

  // We don't need to return the ID, only if it exists or not.
  return (bool) $result;
}