function ConfigNamesMapper::getLangcode

Returns the original language code of the configuration.

Overrides ConfigMapperInterface::getLangcode

File

core/modules/config_translation/src/ConfigNamesMapper.php, line 400

Class

ConfigNamesMapper

Configuration mapper base implementation.

Namespace

Code

public function getLangcode() {
  $langcodes = array_map([
    $this,
    'getLangcodeFromConfig',
  ], $this->getConfigNames());
  if (count(array_unique($langcodes)) > 1) {
    throw new ConfigMapperLanguageException('A config mapper can only contain configuration for a single language.');
  }
  return reset($langcodes);
}