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On . By CodimTh
Category:

How to redirect anonymous users to login page in drupal 8 & 9

 

Code snippet that can be used to  redirect anonymous users to login page in drupal 8 & 9.

 

First step ypu need to add custom service, in MODULENAME.services.yml:

services:
  redirect_anonymous.event_subscriber:
    class: Drupal\mymodule\EventSubscriber\RedirectAnonymousSubscriber
    arguments: []
    tags:
      - {name: event_subscriber}

 

Then add RedirectAnonymousSubscriber.php for your custom event subscriber in your module in the /src/EventSubscriber/ folder.

 

namespace Drupal\mymodule\EventSubscriber;

use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * Event subscriber subscribing to KernelEvents::REQUEST.
 */
class RedirectAnonymousSubscriber implements EventSubscriberInterface {

  public function __construct() {
    $this->account = \Drupal::currentUser();
  }

  public function checkAuthStatus(GetResponseEvent $event) {

    if ($this->account->isAnonymous() && \Drupal::routeMatch()->getRouteName() != 'user.login') {

      // add logic to check other routes you want available to anonymous users,
      // otherwise, redirect to login page.
      $route_name = \Drupal::routeMatch()->getRouteName();
      if (strpos($route_name, 'view') === 0 && strpos($route_name, 'rest_') !== FALSE) {
        return;
      }

      $response = new RedirectResponse('/user/login', 301);
      $event->setResponse($response);
      $event->stopPropagation();
    }
  }

  public static function getSubscribedEvents() {
    $events[KernelEvents::REQUEST][] = array('checkAuthStatus');
    return $events;
  }

}

 

Advanced Example to allow user registration and reset password ...

<?php

namespace Drupal\mymodule\EventSubscriber;

use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\EventDispatcher\Event;


class RedirectAnonymousSubscriber implements EventSubscriberInterface {

  public function __construct() {
    $this->account = \Drupal::currentUser();
  }

  public function checkAuthStatus(Event $event) {

    $allowed = [
      'user.logout',
      'user.register',
      'user.login',
      'user.reset',
      'user.reset.form',
      'user.reset.login',
      'user.login.http',
      'user.logout.http',
      'user.pass'
    ];

    if ( ($this->account->isAnonymous()) && ( !in_array(\Drupal::routeMatch()->getRouteName(), $allowed)) ) {

      // add logic to check other routes you want available to anonymous users,
      // otherwise, redirect to login page.
      $route_name = \Drupal::routeMatch()->getRouteName();
      if (strpos($route_name, 'view') === 0 && strpos($route_name, 'rest_') !== FALSE) {
        return;
      }

      $response = new RedirectResponse('/user/login', 302);
      $response->send();
    }

  }

  public static function getSubscribedEvents() {
    $events[KernelEvents::REQUEST][] = array('checkAuthStatus');
    return $events;
  }

}

 

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