title: Yii2 AuthClient set return page for Facebook client
body: <p>I have a form for lead gen, which just get the user information (like name, gender, email) which can be filled out with Facebook. But the problem is, selecting to fill form with FB redirect to index page. How can i set the return page to some other view or action?</p>
  
  <pre><code>public function onAuthSuccess($cliente)
  {
      // TODO: fb login e retornar dados do perfil para o form
      $fb = new Facebook([
          'app_id' =&gt; MYAPPID,
          'app_secret' =&gt; MYAPPSECRET
      ]);
      try {
          $token = $cliente-&gt;getAccessToken()-&gt;getToken();
          // Returns a `Facebook\FacebookResponse` object
          $usuario = $fb-&gt;get('/me?fields=email,name,gender,age_range',
              $token)-&gt;getDecodedBody();
  
      } catch(Exception $e) {
          echo 'Error: ' . $e-&gt;getMessage();
          exit;
      }
  
      return ; // actually doesn't matter, it always end redirecting to site/index
  }
  </code></pre>
  
  <p>Auth config:</p>
  
  <p><code>'auth' =&gt; ['class' =&gt; yii\authclient\AuthAction::className(),'successCallback' =&gt; [$this, 'onAuthSuccess']]</code></p>