Yii - Utilizzo dei cookie

I cookie consentono la persistenza dei dati tra le richieste. In PHP, puoi accedervi tramite$_COOKIEvariabile. Yii rappresenta il cookie come un oggetto diyii\web\Cookieclasse. In questo capitolo vengono descritti diversi metodi per leggere i cookie.

Step 1 - Crea un file actionReadCookies metodo in SiteController.

public function actionReadCookies() { 
   // get cookies from the "request" component 
   $cookies = Yii::$app->request->cookies; // get the "language" cookie value // if the cookie does not exist, return "ru" as the default value $language = $cookies->getValue('language', 'ru'); // an alternative way of getting the "language" cookie value if (($cookie = $cookies->get('language')) !== null) { $language = $cookie->value; } // you may also use $cookies like an array 
   if (isset($cookies['language'])) { $language = $cookies['language']->value; } // check if there is a "language" cookie if ($cookies->has('language')) echo "Current language: $language"; 
}

Step 2 - Per vedere l'invio di cookie in azione, crea un metodo chiamato actionSendCookies nel SiteController.

public function actionSendCookies() { 
   // get cookies from the "response" component 
   $cookies = Yii::$app->response->cookies; // add a new cookie to the response to be sent $cookies->add(new \yii\web\Cookie([ 
      'name' => 'language', 
      'value' => 'ru-RU', 
   ])); 
   $cookies->add(new \yii\web\Cookie([ 'name' => 'username', 'value' => 'John', ])); $cookies->add(new \yii\web\Cookie([ 
      'name' => 'country', 
      'value' => 'USA', 
   ])); 
}

Step 3 - Ora, se vai a http://localhost:8080/index.php?r=site/send-cookies, noterai che i cookie vengono salvati all'interno del browser.

In Yii, per impostazione predefinita, la convalida dei cookie è abilitata. Protegge i cookie dalla modifica sul lato client. La stringa hash dal file config / web.php firma ogni cookie.

<?php 
   $params = require(__DIR__ . '/params.php'); $config = [ 
      'id' => 'basic', 
      'basePath' => dirname(__DIR__), 
      'bootstrap' => ['log'], 
      'components' => [ 
         'request' => [ // !!! insert a secret key in the following (if it is empty) - this is //required by cookie validation 'cookieValidationKey' => 'ymoaYrebZHa8gURuolioHGlK8fLXCKjO', ], 
         'cache' => [ 
            'class' => 'yii\caching\FileCache', 
         ], 
         'user' => [ 
            'identityClass' => 'app\models\User', 
            'enableAutoLogin' => true, 
         ], 
         'errorHandler' => [ 
            'errorAction' => 'site/error', 
         ], 
         'mailer' => [ 
            'class' => 'yii\swiftmailer\Mailer', 
            // send all mails to a file by default. You have to set 
            // 'useFileTransport' to false and configure a transport 
            // for the mailer to send real emails. 
            'useFileTransport' => true, 
         ], 
         'log' => [ 
            'traceLevel' => YII_DEBUG ? 3 : 0, 
            'targets' => [ 
               [ 
                  'class' => 'yii\log\FileTarget', 
                     'levels' => ['error', 'warning'], 
                ], 
            ], 
         ], 
         'urlManager' => [ 
            //'showScriptName' => false, 
            //'enablePrettyUrl' => true, 
            //'enableStrictParsing' => true, 
            //'suffix' => '/' 
         ], 
         'db' => require(__DIR__ . '/db.php'), 
      ], 
      'modules' => [ 
         'hello' => [ 
            'class' => 'app\modules\hello\Hello', 
         ], 
      ], 
      'params' => $params, ]; if (YII_ENV_DEV) { // configuration adjustments for 'dev' environment $config['bootstrap'][] = 'debug'; 
      $config['modules']['debug'] = [ 'class' => 'yii\debug\Module', ]; $config['bootstrap'][] = 'gii'; 
      $config['modules']['gii'] = [ 'class' => 'yii\gii\Module', ]; } return $config; 
?>

È possibile disabilitare la convalida dei cookie impostando l'estensione yii\web\Request::$enableCookieValidation proprietà a false.