CodeIgniter-JWT-Sample using CodeIgniter 4

Simple CodeIgniter 4 JWT implementation.

Developers who want to use CodeIgniter 3:

Use following command to switch to CodeIgniter 3 branch

git checkout CI3

Setup using this repo

• Clone this project on php server XAMPP/WAMP.

• This project uses [Composer] (https://getcomposer.org/) as Dependency Manager

• Use following command to auto install required dependencies

  composer install

• In /app/Config/Services.php change secret key at line 23

• Run or Test code using Postman or any other Rest Client

Setup for existing CodeIgniter 4 project

• Use composer to manage your dependencies and download PHP-JWT:

 composer require firebase/php-jwt

• [Filter] (https://codeigniter.com/user_guide/incoming/filters.html)

Copy app/Filters/AuthFilter.php to your project

In /app/Config/Filters.php add following line at the end of $aliases array

'authFilter' => \App\Filters\AuthFilter::class,

Add following in $filters array

'authFilter' => [
    'before' => [
        'api/user/*',
        'api/user',
    ],
],

• In /app/Config/Routes.php add routes to your Auth controller and resource

$routes->resource('api/auth', ['controller' => 'Auth']);
$routes->resource('api/user', ['controller' => 'User']);

• In /app/Config/Services.php add function to return secret key

public static function getSecretKey()
{
    return 'example_key';
}

• Add logic to generate token in your AuthController after validating login credentials

$key = Services::getSecretKey();
$payload = array(
    "iss" => "http://example.org",
    "aud" => "http://example.com",
    "iat" => 1356999524,
    "nbf" => 1357000000
);

$jwt = JWT::encode($payload, $key);

• Run or Test code using Postman or any other Rest Client

Run

Generate auth token using login credentials

URL: http://localhost/CodeIgniter-JWT-Sample/public/index.php/api/auth
Method: POST
Params type: x-www-form-urlencoded
Params: email:same_text
        password:same_text

Access resource - User for this example

URL: http://localhost/CodeIgniter-JWT-Sample/public/index.php/api/user
Method: GET
Header Key: Authorization
Value: Bearer <Token value from above call>

Project uses

[CodeIgniter 4] (https://www.codeigniter.com/)
[php-jwt] (https://github.com/firebase/php-jwt)

Contact

For any questions mail me paritoshvaidya@gmail.com