Use SlashID with Symfony

You can add SlashID authentication to your PHP application with the free, open source Symfony library.

Installation

Install the Symfony SlashID package with composer:

composer require slashid/symfony

Edit your environment file, .env, adding the following variables to the end of the file:
- SLASHID_ENVIRONMENT, either sandbox or production
- SLASHID_ORGANIZATION_ID, your organization's ID. You'll find it in your SlashID console (https://console.slashid.dev/ for production, https://console.sandbox.slashid.dev/ for sandbox), in the "Settings" tab, on the top of the page.
- SLASHID_API_KEY, your organization's API Key. You'll also find it in your SlashID console, in the "Settings" tab, at the very bottom of the page.

# .env

SLASHID_ENVIRONMENT=sandbox
SLASHID_ORGANIZATION_ID=412edb57-ae26-f2aa-9999-770021ed52d1
SLASHID_API_KEY=z0dlY-nluiq8mcvm8YTolSkJV6e9

Run the Symfony command to publish the bundle assets:

php bin/console assets:install

Edit config/routes.yaml and add this to the end of it:

# config/routes.yaml

_slashid_symfony_bundle:
    resource: '@slashid/config/routes.yaml'

Edit config/packages/security.yaml to add the following references to SlashID:

# config/packages/security.yaml

security:
    providers:
        slashid:
          id: slashid.user_provider

    firewalls:
        dev:
            pattern: ^/(_(profiler|wdt)|css|images|js)/
            security: false
        main:
            lazy: true
            provider: slashid
            custom_authenticators:
                - slashid.authenticator
            logout:
                path: /logout

You're ready! Now access /login in your website and enjoy your new login with SlashID :)

If your Symfony installation acts as an API backend (for a React application, for instance), you will probably want to configure stateless login. To do that, just add stateless: true to the firewall configuration, for instance:

# config/packages/security.yaml

security:
    # ................
    firewalls:
        api:
            pattern: ^/api
            provider: slashid
            custom_authenticators:
                - slashid.authenticator
            stateless: true
        main:
            lazy: true
            provider: slashid
            custom_authenticators:
                - slashid.authenticator

In the example above, any requests to /api/**** will be logged in by sending the SlashID token in a Authorization: Bearer <<TOKEN>> header. All other routes will be logged in with a cookie.

⚠️ Attention! If you do not add stateless: true, requests with a Authorization: Bearer <<TOKEN>> header WILL create a cookie login.

Configuration

If you want to customize the SlashID integration by creating a config/packages/slashid.yaml file inside your Symfony installation, for instance:

# config/packages/slashid.yaml

slashid:
    login_form:
        configuration:
            analytics-enabled: false
            theme-props:
                theme: dark
            factors:
                - { "method": "webauthn" }
                - { "method": "email_link" }
                - { "method": "password" }
        css_override:
            --sid-color-primary: "#f00"
            --sid-color-primary-hover: "#900"

    route_after_login: 'dashboard'

These are the configuration options:

Configuration	Default value	Description
`slashid.login_form.analytics`	`true`	Whether or not to to include Analytics in the login form.
`slashid.login_form.configuration`	`[]`	See Login form configuration
`slashid.login_form.css_override`	`null`	See Login form theme
`slashid.login_form.override_bundled_javascript`	`false`	Set true to override the Bundled JavaScript form, see Overriding the login form.
`slashid.login_form.override_javascript_glue`	`false`	Set true to override the JavaScript glue code, see Overriding the login form.
`slashid.route_after_login`	`null`	The route to redirect the user after login. If not set, the user will be redirected to `/`.
`slashid.migration_script_folder`	`%kernel.project_dir%/migrations/slashid`	The folder where to create the migration script. See User Migration.

The login form is a bundled version of SlashID's React SDK. As such all options in the components are usable here, just note that you have to convert camelCase to kebab-case (see examples below).

For instance, to use the dark theme, do this:

# config/packages/slashid.yaml

slashid:
    login_form:
        configuration:
            theme-props:
                theme: dark

If you want to enable password login and disable email link login, do this:

# config/packages/slashid.yaml

slashid:
    login_form:
        configuration:
            factors:
                - { "method": "webauthn" }
                - { "method": "password" }

You can also override any of the CSS variables provided by the React SDK. For instance, to make the login button red with a darker red hover, you can do the following:

# config/packages/slashid.yaml

slashid:
    login_form:
        css_override:
            --sid-color-primary: "#f00"
            --sid-color-primary-hover: "#900"

Groups

Group-based access in routes

The groups in SlashID are exposed as Symfony roles. So, for instance, if you have a group named "Editor", the user will have the role ROLE_EDITOR.

You can protected routes by SlashID groups editing security.yaml like this:

# config/packages/security.yaml

security:
    # ..........

    access_control:
        - { path: "^/editor", roles: ROLE_EDITOR }
        - { path: ^/admin, roles: ROLE_ADMIN }

⚠️ Attention! All group names will be capitalized, so groups named "Editor", "editor" and "EDITOR" will all be transcribed as ROLE_EDITOR.

Group-checking in custom code

If you want to check the groups of a user in your custom code, you can use any of the group-related methods of the \SlashId\Symfony\SlashIdUser class, e.g.:

// src/Controller/MyCustomController.php

namespace App\Controller;

<?php

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class TestController extends AbstractController
{

    #[Route('/my-test-route')]
    public function testRoute(): Response
    {
        /** @var \SlashId\Symfony\SlashIdUser */
        $user = $this->getUser();

        if ($user->hasGroup('Editor')) {
            // Do things that only an "Editor" user can do.
        }

        if ($user->hasAnyGroup(['Admin', 'Editor', 'Reviewer'])) {
            // Do things that someone in the group "Admin", OR in the group
            // "Editor", OR in the group "Reviewer" can do.
        }

        if ($user->hasAllGroups(['Admin', 'Editor'])) {
            // Do things that only someone that is in *both* "Admin" and
            // "Editor" groups can do.
        }

        // Shows the user groups as a list of strings.
        dd($user->getGroups());
    }
}

Group-checking in Twig

You can also use the hasGroup / hasAnyGroup / hasAllGroups methods to build Twig templates that display different things depending on the groups the user belongs to.

{# templates/test.html.twig #}

{% if app.user %}

    <p>You are logged in</p>

    {% if app.user.hasGroup('Editor') %}
        <p>Information Editors can access.</p>

    {% endif %}

    {% if app.user.hasGroup('Admin') %}

        <p>Information Admins can access.</p>

    {% endif %}

    {% if app.user.hasAnyGroup(['Admin', 'Editor']) %}

        <p>Information both Editors and Admins can access.</p>

    {% endif %}

    {{ dump(app.user.getGroups()) }}

{% else %}

    <p>You are NOT logged in</p>

{% endif %}

Webhooks

See SlashID documentation on Webhooks.

CLI webhook commands

To use webhooks, you need first to register your URL with SlashID. Webhooks are managed via API, but this package provides three CLI commands to help you manage them.

How to register webhooks

To register a new webhook for the current website use the following command. You are required to define a unique name for it, in this example, we're using my_webhook.

php bin/console slashid:webhook:register my_webhook

By default, the webhook is registered with the triggers: PersonDeleted_v1, PersonLoggedOut_v1, and PasswordChanged_v1. You can specify which triggers to register, listing the triggers separated by space:

php bin/console slashid:webhook:register my_webhook PasswordChanged_v1 VirtualPageLoaded_v1 AuthenticationFailed_v1

You can run slashid:webhook:register as many times as you want, if there is already a webhook registered to that URL, it will be updated and the list of triggers will be overridden.

How to test webhooks locally

You can test webhooks in your local development environment with a tool such as ngrok, then use the option --base-url to register a webhook with the proxy.

For instance, if you are running Symfony on port 8080, you can proxy your local environment with ngrok with:

ngrok http 8000

The ngrok command-line will then display data about your proxy, such as:

Forwarding                    https://2f45-2804-14c-483-983f-b323-32f2-4714-1609.ngrok-free.app -> http://localhost:8000

Then, you can register a web service to the proxy URL, with the following command:

php bin/console slashid:webhook:register proxied_webhook PasswordChanged_v1 --base-url=https://2f45-2804-14c-483-983f-b323-32f2-4714-1609.ngrok-free.app

How to register webhooks for other applications

You can use the CLI command to register webhooks with any arbitrary URL:

php bin/console slashid:webhook:register proxied_webhook PasswordChanged_v1 --webhook-url=https://someotherapplication.example.com/some-arbitrary-url

How to see existing webhooks

You can see all webhooks registered to your SlashID organization with the command:

php bin/console slashid:webhook:list

How to delete a webhook

You can delete a webhook by its ID.

php bin/console slashid:webhook:delete 065e5237-c1c4-7a96-ab00-783ef0cbd002

To learn a webhook ID, use the slashid:webhook:list command.

Listening to events

Any received webhook will be made available to the developer as a Symfony event.

To listen to webhook events in your Symfony application, create a class in the src/EventListener folder of your application. In the example below, we are naming it WebhookEventListener, but you can name it as you like.

// src/EventListener/WebhookEventListener.php

namespace App\EventListener;

use SlashId\Symfony\Event\WebhookEvent;
use Symfony\Component\EventDispatcher\Attribute\AsEventListener;

#[AsEventListener]
class WebhookEventListener
{
    public function __invoke(WebhookEvent $event): void
    {
        print_r([
            $event->getEventName(),
            $event->getEventId(),
            $event->getTriggerContent(),
        ]);
    }
}

The listener will receive the event of class \SlashId\Symfony\Event\WebhookEvent. It has three methods you can use to extract information about the webhook call:

$event->getEventName() will return the trigger name, such as AuthenticationFailed_v1, that is, ->trigger_content->event_metadata->event_name in the JSON sent to the webhook.
$event->getEventId() will return the event ID, such as 68a850ca-b2ee-46ce-8592-410813037739, that is, ->trigger_content->event_metadata->event_id in the JSON sent to the webhook.
$event->getTriggerContent() will return the full content of the webhook call, that is, ->trigger_content in the JSON sent to the webhook.

Overriding routes

By default, the Symfony bundle exposes three routes:

/login - the login form
/login/callback - a route called in the background to complete the login process
/slashid/webhook - the webhook listener

In some cases, you might not want to expose either the webhook or the login form, or even to change the URLs for those routes. To accomplish that, first remove the _slashid_symfony_bundle: line from config/routes.yaml, then add the routes manually:

# config/routes.yaml

# Remove the two lines below.
#_slashid_symfony_bundle:
#    resource: '@slashid/config/routes.yaml'

slashid.login:
    path: /custon-path-for-login
    controller: SlashId\Symfony\Controller\LoginController::login

slashid.login.callback:
    path: /custon-path-for-login/callback
    controller: SlashId\Symfony\Controller\LoginController::loginCallback

# In this example we don't enable the webhook listener.
#slashid.webhook:
#    path: /slashid/webhook
#    controller: SlashId\Symfony\Controller\WebhookController::webhook

⚠️ Note: you must keep the names of the routes: slashid.login, slashid.login.callback and slashid.webhook.

User Migration

If you are installing SlashID in an existing Symfony website, you will probably already have a user base that you'll want to migrate to SlashID's database. This is made easy with two migration commands.

First, you have to run the command php bin/console slashid:import:create-script. It will ask you the User class in your installation, usually \App\Models\User.

$ php bin/console slashid:import:create-script

 Please inform the class of the user model [\App\Entity\User]:
 >


 [OK] The Slash ID migration script has been created at
      /var/www/symfony/migrations/slashid/user-migration.php. Please open the file and modify it
      according to the instructions in it.

A script will be created in migrations/slashid/user-migration.php (you can customize the folder destination by changing the migration_script_folder option). It will look like this:

<?php

use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;
use SlashId\Php\PersonInterface;
use SlashId\Symfony\SlashIdUser;

return static function (EntityManagerInterface $entityManager): array {
    /** @var array<User> */
    $doctrineUsers = $entityManager->getRepository(User::class)->findAll();
    $slashIdUsers = [];

    foreach ($doctrineUsers as $doctrineUser) {
        $roles = $doctrineUser->getRoles();
        unset($roles[array_search('ROLE_USER', $roles)]);

        // Converts "ROLE_ADMIN" into "Admin".
        $roles = array_map(fn (string $role) => ucwords(strtolower(str_replace('_', ' ', str_replace('ROLE_', '', $role)))), $roles);

        $slashIdUser = new SlashIdUser();
        $slashIdUser
            ->addEmailAddress($doctrineUser->getEmail())
            ->setLegacyPasswordToMigrate($doctrineUser->getPassword())
            // Uncomment if you want to set the phone number.
            // ->addPhoneNumber($doctrineUser->getPhoneNumber())
            ->setGroups($roles)
            // Uncomment if you want to specify a region for the user.
            // ->setRegion('us-iowa')
            ->setBucketAttributes(PersonInterface::BUCKET_ORGANIZATION_END_USER_NO_ACCESS, [
                // List the user attributes you want to migrate, grouped by bucket.
                'old_id' => $doctrineUser->getUserIdentifier(),
                // 'first_name' => $doctrineUser->getFirstName(),
                // 'last_name' => $doctrineUser->getLastName(),
            ])
        ;

        $slashIdUsers[] = $slashIdUser;
    }

    return $slashIdUsers;
};

You must adapt the user-migration.php to model the data to be migrated as you want, especially adding the attributes you want. The script must return an array of \SlashId\Symfony\SlashIdUser with all the users you want to bulk import into SlashID.

After adapting the script to your needs, run php bin/console slashid:import:run, e.g.:

$ php bin/console slashid:import:run
+------------------------+---------------+--------+-------+--------+-------------------------------------------------------------------------------------------------------------------------------+
| Emails                 | Phone numbers | Region | Roles | Groups | Attributes                                                                                                                    |
+------------------------+---------------+--------+-------+--------+-------------------------------------------------------------------------------------------------------------------------------+
| [email protected]   |               |        |       |        | {"end_user_no_access":{"old_id":1,"firstname":"Urbano","email_verified_at":null,"lastname":"Rattazzi","username":"rattazzi"}} |
| [email protected]      |               |        |       |        | {"end_user_no_access":{"old_id":2,"firstname":"Francesco","email_verified_at":null,"lastname":"Nitti","username":"nitti"}}    |
| [email protected]     |               |        |       |        | {"end_user_no_access":{"old_id":3,"firstname":"Camillo","email_verified_at":null,"lastname":"Cavour","username":"cavour"}}    |
+------------------------+---------------+--------+-------+--------+-------------------------------------------------------------------------------------------------------------------------------+

 Do you want to proceed with importing 3 users? (yes/no) [no]:
 > yes

2 successfully imported users.
1 users failed to import. Check the file /var/www/symfony/migrations/slashid/migration-failed-202403271142.csv for errors.

Any errors that occured in a migration will be output as a CSV. Check the CSV to fix the errors and run again.

Twig template and how to insert the form in a layout

The login form is rendered in the Twig template templates/login/login.html.twig, that extends base.html.twig, so that the login form is wrapped by the site's default layout.

If you want to change the template, copy the file vendor/slashid/symfony/templates/login/login.html.twig to templates/bundles/slashid/login/login.html.twig and change it as you please.

Using custom JavaScript

The Laravel package comes with a bundle of the SlashID React SDK and a small JavaScript glue piece of code in vendor/slashid/symfony/public/slashid.symfony-web-login.js.

You may want to override the Bundled React SDK to compile your implementation of the React login form. If that's the case, change the option slashid.login_form.override_bundled_javascript to true in config/packages/slashid.yaml to prevent the Bundled React SDK from being loaded.

Alternatively, you may want to override the glue code, to include custom actions after the login. If that's the case, change the option slashid.login_form.override_javascript_glue to true to prevent the glue code from being loaded.

In both cases, you are responsible for loading your custom code yourself.

Installation​

Stateless Login​

Configuration​

Login form configuration​

Groups​

Group-based access in routes​

Group-checking in custom code​

Group-checking in Twig​

Webhooks​

CLI webhook commands​

How to register webhooks​

How to test webhooks locally​

How to register webhooks for other applications​

How to see existing webhooks​

How to delete a webhook​

Listening to events​

Overriding routes​

User Migration​

Overriding the login form​

Twig template and how to insert the form in a layout​

Using custom JavaScript​