public function AliasStorage::aliasExists in Multiversion 8

Checks if alias already exists.

The default implementation performs case-insensitive matching on the 'source' and 'alias' strings.

Parameters

string $alias: Alias to check against.

string $langcode: Language of the alias.

string|null $source: (optional) Path that alias is to be assigned to.

Return value

bool TRUE if alias already exists and FALSE otherwise.

Overrides AliasStorage::aliasExists

File

src/AliasStorage.php, line 276

Class

AliasStorage

Extends the core AliasStore class. We need this to make possible aliases to work with Multiversion and Replication.

Namespace

Drupal\multiversion

Code

public function aliasExists($alias, $langcode, $source = NULL) {
  if (!$this->connection
    ->schema()
    ->fieldExists('url_alias', 'workspace')) {
    return parent::aliasExists($alias, $langcode, $source);
  }

  // Use LIKE and NOT LIKE for case-insensitive matching.
  $query = $this->connection
    ->select(static::TABLE)
    ->condition('alias', $this->connection
    ->escapeLike($alias), 'LIKE')
    ->condition('langcode', $langcode)
    ->condition('workspace', [
    $this->workspaceManager
      ->getActiveWorkspaceId(),
    0,
  ], 'IN');
  if (!empty($source)) {
    $query
      ->condition('source', $this->connection
      ->escapeLike($source), 'NOT LIKE');
  }
  $query
    ->addExpression('1');
  $query
    ->range(0, 1);
  try {
    return (bool) $query
      ->execute()
      ->fetchField();
  } catch (\Exception $e) {
    $this
      ->catchException($e);
    return FALSE;
  }
}