Disable User Deletion

User deletion is always a sensitive task for two key reasons:

• It can involve the deletion of content or changes to the content's authorization.
• There are two open core issues: potential content regressions (Issue 3089747) or errors in the ownership of revisions (Issue 2977362).

For these reasons, it is crucial to perform this action in a highly controlled manner.

This module allows you to enable or disable the two actions associated with user deletion:

• Delete the account and makes its content belong to the Anonymous user.
• Delete the account and its content.

This helps prevent possible disasters in the production database.

In complex projects, the recommended process is to first test the user deletion in a staging environment. If everything works as expected, you can then proceed with the action in production.

How to configure

• Go to "/admin/config/disable_user_deletion/settings".
• Select the actions would you like to disable.

Disable drush commands

To apply these restrictions to Drush commands, copy this code into the file "drush/Commands/PolicyCommands.php":

/**
  * User cancel policy .
  *
  * @hook validate user:cancel
  *
  * @throws \Exception
  */
  public function usercancellValidate(CommandData $commandData) {
    // Only validate if module 'disable_user_deletion' is enabled.
    // @phpstan-ignore-next-line
    if (\Drupal::service('module_handler')->moduleExists('disable_user_deletion')) {
      // @phpstan-ignore-next-line
      $config = \Drupal::config('disable_user_deletion.settings');

      if ($config->get('user_cancel_delete') && $commandData->input()->getOption('delete-content')) {
        throw new \Exception(dt('The option to delete users has been disabled, please contact the technical administrator.'));
      }
      if ($config->get('user_cancel_reassign') && $commandData->input()->getOption('reassign-content')) {
        throw new \Exception(dt('The option to reassign content has been disabled, please contact the technical administrator.'));
      }
        }
}