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Home PHP Framework YII Yii User Login Latest Mechanism Programming Tutorial

Yii User Login Latest Mechanism Programming Tutorial

Apr 18, 2025 pm 10:42 PM
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This article will guide readers through the latest mechanisms used in the Yii framework for user login. This article will explore in-depth the upgraded user authentication system implemented in Yii 2.0 and later, and the benefits of these upgrades.

Yii User Login Latest Mechanism Programming Tutorial

Yii 2 The latest programming tutorial for user login mechanism

introduction
Yii 2 is a popular PHP framework that provides strong support for authentication and authorization. This article will guide you to use the latest mechanism of Yii 2 to implement user login function.

Installation and configuration

  1. Make sure Yii 2 is installed correctly.
  2. Run the following command in your project to install the Yii 2 authentication component:

     composer requires --prefer-dist yiisoft/yii2-authclient
    composer requires --prefer-dist yiisoft/yii2-user

Create a user model
Create a user model called User , which will extend IdentityInterface and ActiveRecord classes:

 class User extends ActiveRecord implements IdentityInterface
{
    // ... Your code ...
}

Configure authentication components
In your config/web.php file, configure authentication components:

 'components' => [
    'authManager' => [
        'class' => 'yii\rbac\DbManager',
    ],
    'user' => [
        'identityClass' => 'app\models\User',
    ],
]

Create an authentication form
Create a form to collect login information:

 use yii\widgets\ActiveForm;

$form = ActiveForm::begin();
echo $form->field($model, 'username')->label('username');
echo $form->field($model, 'password')->passwordInput()->label('password');
echo $form->submitButton();
ActiveForm::end();

Verify the user
In your controller, verify the credentials provided by the user:

 use yii\web\IdentityInterface;

$user = User::findByUsername($_POST['LoginForm']['username']);
if ($user && $user->validatePassword($_POST['LoginForm']['password'])) {
    // User authentication is successful} else {
    // User authentication failed}

Login user
If the verification is successful, use login() method to log in to the user:

 Yii::$app->user->login($user);

Using external login
Yii 2 also supports user login through external services (such as Google and Facebook). To implement this feature, follow these steps:

  1. Follow the instructions in the Yii 2 documentation to install and configure the authentication client.
  2. In your controller, request the user to log in:

     $authClient = Yii::$app->get('authClientCollection')->getClient('google');
    $authClient->redirectUrl = Url::to(['site/login'], true);
    $authClient->authorize(true);
  3. Handling user login callbacks:

     $authClient = Yii::$app->get('authClientCollection')->getClient('google');
    $code = Yii::$app->request->get('code');
    
    if ($code) {
     $accessToken = $authClient->fetchAccessToken($code);
     $attributes = $authClient->getUserAttributes($accessToken);
     // Create or update user account Yii::$app->user->login($user);
    }

Conclusion
Implementing the user login function using Yii 2's latest mechanism is a relatively simple task. By following the steps in this tutorial, you can create a secure and easy-to-use authentication system.

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