public function DatabaseStorage::exists

public DatabaseStorage::exists($name)

Returns whether a configuration object exists.

Parameters

string $name: The name of a configuration object to test.

Return value

bool TRUE if the configuration object exists, FALSE otherwise.

Overrides StorageInterface::exists

File

core/lib/Drupal/Core/Config/DatabaseStorage.php, line 67

Class

DatabaseStorage

Defines the Database storage.

Namespace

Drupal\Core\Config

Code

public function exists($name) {
  try {
    return (bool) $this->connection->queryRange('SELECT 1 FROM {' . $this->connection->escapeTable($this->table) . '} WHERE collection = :collection AND name = :name', 0, 1, array(
      ':collection' => $this->collection,
      ':name' => $name,
    ), $this->options)->fetchField();
  }
  catch (\Exception $e) {
    // If we attempt a read without actually having the database or the table
    // available, just return FALSE so the caller can handle it.
    return FALSE;
  }
}