public function MemoryStorage::deleteAll

Deletes configuration objects whose names start with a given prefix.

Given the following configuration object names:

• node.type.article
• node.type.page

Passing the prefix 'node.type.' will delete the above configuration objects.

Parameters

string $prefix: (optional) The prefix to search for. If omitted, all configuration objects that exist will be deleted.

Return value

bool TRUE on success, FALSE otherwise.

Overrides StorageInterface::deleteAll

File

core/lib/Drupal/Core/Config/MemoryStorage.php, line 131

Class

MemoryStorage

Provides an in memory configuration storage.

Namespace

Code

public function deleteAll($prefix = '') {
  if (!$this->config
    ->offsetExists($this->collection)) {

    // There's nothing to delete.
    return FALSE;
  }
  if ($prefix === '') {
    $this->config
      ->offsetUnset($this->collection);
    return TRUE;
  }
  $success = FALSE;
  foreach (array_keys($this->config[$this->collection]) as $name) {
    if (str_starts_with($name, $prefix)) {
      $success = TRUE;
      unset($this->config[$this->collection][$name]);
    }
  }

  // Remove the collection if it is empty.
  if (empty($this->config[$this->collection])) {
    $this->config
      ->offsetUnset($this->collection);
  }
  return $success;
}