public function Bundle::getContainerExtension in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/symfony/http-kernel/Bundle/Bundle.php \Symfony\Component\HttpKernel\Bundle\Bundle::getContainerExtension()

Returns the bundle's container extension.

Return value

ExtensionInterface|null The container extension

Throws

\LogicException

Overrides BundleInterface::getContainerExtension

File

vendor/symfony/http-kernel/Bundle/Bundle.php, line 68

Class

Bundle

An implementation of BundleInterface that adds a few conventions for DependencyInjection extensions and Console commands.

Namespace

Symfony\Component\HttpKernel\Bundle

Code

public function getContainerExtension() {
  if (null === $this->extension) {
    $class = $this
      ->getContainerExtensionClass();
    if (class_exists($class)) {
      $extension = new $class();
      if (!$extension instanceof ExtensionInterface) {
        throw new \LogicException(sprintf('Extension %s must implement Symfony\\Component\\DependencyInjection\\Extension\\ExtensionInterface.', $class));
      }

      // check naming convention
      $basename = preg_replace('/Bundle$/', '', $this
        ->getName());
      $expectedAlias = Container::underscore($basename);
      if ($expectedAlias != $extension
        ->getAlias()) {
        throw new \LogicException(sprintf('Users will expect the alias of the default extension of a bundle to be the underscored version of the bundle name ("%s"). You can override "Bundle::getContainerExtension()" if you want to use "%s" or another alias.', $expectedAlias, $extension
          ->getAlias()));
      }
      $this->extension = $extension;
    }
    else {
      $this->extension = false;
    }
  }
  if ($this->extension) {
    return $this->extension;
  }
}