public function AutocompleteController::handleAutocomplete in Existing Values Autocomplete Widget 8

Same name and namespace in other branches

1. 2.x src/Controller/AutocompleteController.php \Drupal\existing_values_autocomplete_widget\Controller\AutocompleteController::handleAutocomplete()

Handleautocomplete.

Return value

string Return Hello string.

1 string reference to 'AutocompleteController::handleAutocomplete'

existing_values_autocomplete_widget.routing.yml in ./existing_values_autocomplete_widget.routing.yml

existing_values_autocomplete_widget.routing.yml

File

src/Controller/AutocompleteController.php, line 21

Class

AutocompleteController

Class AutocompleteController.

Namespace

Drupal\existing_values_autocomplete_widget\Controller

Code

public function handleAutocomplete(Request $request, $field_name = NULL, $count = 15, $entity_type_id = NULL) {
  $existing_values = [];
  $entity_type_id = $entity_type_id ?: $request->query
    ->get('entity_type_id') ?: 'node';
  if ($input = $request->query
    ->get('q')) {
    $typed_string = Tags::explode($input);
    $typed_string = Unicode::strtolower(array_pop($typed_string));
    $entity_type_manager = \Drupal::entityTypeManager();
    $table_mapping = $entity_type_manager
      ->getStorage($entity_type_id)
      ->getTableMapping();
    $field_table = $table_mapping
      ->getFieldTableName($field_name);
    $field_storage_definitions = \Drupal::service('entity_field.manager')
      ->getFieldStorageDefinitions($entity_type_id)[$field_name];
    $field_column = $table_mapping
      ->getFieldColumnName($field_storage_definitions, 'value');
    $query = \Drupal::database()
      ->select($field_table, 'f');
    $query
      ->fields('f', [
      'entity_id',
      $field_column,
    ]);
    $query
      ->condition($field_column, $query
      ->escapeLike($typed_string) . '%', 'LIKE');
    $query
      ->distinct(TRUE);
    $results = $query
      ->execute()
      ->fetchAllKeyed();
    foreach ($results as $id => $value) {
      $entity = $entity_type_manager
        ->getStorage($entity_type_id)
        ->load($id);
      if ($entity
        ->access('edit')) {
        $existing_values[] = [
          'value' => $value,
          'label' => $value,
        ];
      }
    }
  }
  return new JsonResponse($existing_values);
}