I am creating a module for Drupal 8. One of the requirements is that you first add a new database in settings.php. On the admin page, I want to check if the user did this step and show a warning if he didn't. I tried this:

global $databases;

But doing a var_dump shows nothing.

How do I access the databases variable so I can check if the database is setup?

1 Answer 1


global $databases has been removed in favor of the preexisting static connection info management methods on the Database class.

Drupal 7

global $databases;
// Check whether we have a default connection.
$has_connection = !empty($databases['default']['default']);

Drupal 8

use Drupal\Core\Database\Database;
$has_connection = (bool) Database::getConnectionInfo('default');

More links



  • do not force to bool.$has_connection = Database::getConnectionInfo('default'); dpm($has_connection);
    – skaught
    Dec 9, 2019 at 15:27

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