Programmatically User login not working

Question

I am trying to login users programmatically in Drupal 8. Here goes my code:

if(isset($uid)) {
  $user = User::load($uid);
  user_login_finalize($user);
  $user_destination = \Drupal::destination()->get();
  $response = new RedirectResponse($user_destination);
  $response->send();
  exit(0);
}

I am getting the message 'Session opened for...' in watchdog. But the user is not logged in. Can someone tell me whats wrong with my code?

Answer 1

your code is Ok.

just add the following namespace:

use Drupal\user\Entity\User;
use Symfony\Component\HttpFoundation\RedirectResponse;

delete in your code:

 user_login_finalize($user);

and

 exit(0);

A complete example would be.

use Drupal\user\Entity\User;
use Symfony\Component\HttpFoundation\RedirectResponse;

$uid=1;

if(isset($uid)) {
  $user = User::load($uid);
  user_login_finalize($user);
  $user_destination = \Drupal::destination()->get();
  $response = new RedirectResponse($user_destination);
  $response->send();
ksm($user);
}

if you have installed the

devel

module and the

Kint

submodule, You can use the function

ksm()

, to show the information of a variable.

Answer 2

Here is the full code that you can paste into a new file and run

<?php
use Drupal\Core\DrupalKernel;
use Symfony\Component\HttpFoundation\Request;

$autoloader = require_once 'autoload.php';

$kernel = new DrupalKernel('prod', $autoloader);

$request = Request::createFromGlobals();
$response = $kernel->handle($request);

// ID of the user.
// REPLACE WITH WHATEVER ID YOU WANT TO LOGIN AS;
$uid = 100; 
$user = Drupal\user\Entity\User::load($uid);

// This is required to call user_login_finalize here.
$kernel->prepareLegacyRequest($request);
user_login_finalize($user);

$response->send();

$kernel->terminate($request, $response);

Ref: http://www.drupal8.ovh/en/tutoriels/76/login-programmatically-as-a-user