public function SelectionBase::validateAutocompleteInput in Entity reference 8

Implements EntityReferenceHandler::validateAutocompleteInput().

Overrides SelectionInterface::validateAutocompleteInput

File

lib/Drupal/entityreference/Plugin/entityreference/selection/SelectionBase.php, line 210

Definition of Drupal\entityreference\Plugin\entityreference\selection\SelectionBase.

Class

SelectionBase

Plugin implementation of the 'selection' entityreference.

Namespace

Drupal\entityreference\Plugin\entityreference\selection

Code

public function validateAutocompleteInput($input, &$element, &$form_state, $form) {
  $entities = $this
    ->getReferencableEntities($input, '=', 6);
  if (empty($entities)) {

    // Error if there are no entities available for a required field.
    form_error($element, t('There are no entities matching "%value"', array(
      '%value' => $input,
    )));
  }
  elseif (count($entities) > 5) {

    // Error if there are more than 5 matching entities.
    form_error($element, t('Many entities are called %value. Specify the one you want by appending the id in parentheses, like "@value (@id)"', array(
      '%value' => $input,
      '@value' => $input,
      '@id' => key($entities),
    )));
  }
  elseif (count($entities) > 1) {

    // More helpful error if there are only a few matching entities.
    $multiples = array();
    foreach ($entities as $id => $name) {
      $multiples[] = $name . ' (' . $id . ')';
    }
    form_error($element, t('Multiple entities match this reference; "%multiple"', array(
      '%multiple' => implode('", "', $multiples),
    )));
  }
  else {

    // Take the one and only matching entity.
    return key($entities);
  }
}