Updates a Drupal project, returns a list of next actions.

Parameters

FileTransfer $filetransfer: Object that is a child of FileTransfer. Used for moving files to the server.

array $overrides: An array of settings to override defaults; see self::getInstallArgs().

Return value

array An array of links which the user may need to complete the update

File

drupal-7.x/includes/updater.inc, line 220

Classes used for updating various files in the Drupal webroot. These classes use a FileTransfer object to actually perform the operations. Normally, the FileTransfer is provided when the site owner is redirected to authorize.php as part of a multistep…

Class

Updater

Base class for Updaters used in Drupal.

Code

public function update(&$filetransfer, $overrides = array()) {
  try {
    // Establish arguments with possible overrides.
    $args = $this->getInstallArgs($overrides);

    // Take a Backup.
    if ($args['make_backup']) {
      $this->makeBackup($args['install_dir'], $args['backup_dir']);
    }

    if (!$this->name) {
      // This is bad, don't want to delete the install directory.
      throw new UpdaterException(t('Fatal error in update, cowardly refusing to wipe out the install directory.'));
    }

    // Make sure the installation parent directory exists and is writable.
    $this->prepareInstallDirectory($filetransfer, $args['install_dir']);

    // Note: If the project is installed in sites/all, it will not be
    // deleted. It will be installed in sites/default as that will override
    // the sites/all reference and not break other sites which are using it.
    if (is_dir($args['install_dir'] . '/' . $this->name)) {
      // Remove the existing installed file.
      $filetransfer->removeDirectory($args['install_dir'] . '/' . $this->name);
    }

    // Copy the directory in place.
    $filetransfer->copyDirectory($this->source, $args['install_dir']);

    // Make sure what we just installed is readable by the web server.
    $this->makeWorldReadable($filetransfer, $args['install_dir'] . '/' . $this->name);

    // Run the updates.
    // @TODO: decide if we want to implement this.
    $this->postUpdate();

    // For now, just return a list of links of things to do.
    return $this->postUpdateTasks();
  }
  catch (FileTransferException $e) {
    throw new UpdaterFileTransferException(t('File Transfer failed, reason: !reason', array('!reason' => strtr($e->getMessage(), $e->arguments))));
  }
}