public AliasStorage::aliasExists($alias, $langcode, $source = NULL)
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 $source: (optional) Path that alias is to be assigned to.
Return value
bool TRUE if alias already exists and FALSE otherwise.
Overrides AliasStorageInterface::aliasExists
File
- core/lib/Drupal/Core/Path/AliasStorage.php, line 292
Class
- AliasStorage
- Provides a class for CRUD operations on path aliases.
Namespace
Drupal\Core\Path
Code
public function aliasExists($alias, $langcode, $source = NULL) {
// Use LIKE and NOT LIKE for case-insensitive matching.
$query = $this->connection->select(static::TABLE)
->condition('alias', $this->connection->escapeLike($alias), 'LIKE')
->condition('langcode', $langcode);
if (!empty($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;
}
}
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