Adding and managing module and theme extensions

Drupal is extremely versatile due to its composable design and its large ecosystem of contributed modules and themes. Composer is used for installing and upgrading extensions on your Drupal site using its require and update commands. In this recipe, we will add the popular Pathauto module (https://www.drupal.org/project/pathauto) and the Barrio theme (https://www.drupal.org/project/bootstrap_barrio), a Bootstrap 5 theme.

How to do it…

1. Open a terminal and navigate to your Drupal code base.
2. First, we will add the Pathauto module using the require command:

   composer require drupal/pathauto

Composer will output some data as it begins resolving the Pathauto package. You will notice that the module dependencies for Pathauto were also downloaded: Token and Chaos Tools.

The modules will be installed into the web/modules/contrib directory.

3. Next, we will add the Barrio theme:

   composer require drupal/bootstrap_barrio...