How to add / remove user role programmatically in Drupal 8 ?

LOBsTerr — Thu, 07 Nov 2019 09:56:51 +0000

LOBsTerr 11/07/2019

User access system based on roles and in some cases we want to assign role based on specific business requirements.

For this we need to load a user first:

<?php
use Drupal\user\Entity\User;

// pass the correct user id here.
User:load(4);

or we can load current user

<?php
use Drupal\user\Entity\User;

User::load(\Drupal::currentUser()->id());

Then we add a user role

// pass machine name of the user.
$user->addRole('administrator');
$user->save();

To remove the role we can use this code

// pass machine name of the user.
$user->removeRole('administrator');
$user->save();