Yarik / artbox-shop

  <?php
      namespace backend\controllers;

  
      use artbox\core\models\LoginForm;

      use common\models\Settings;
      use Yii;
      use yii\web\Controller;
      use yii\filters\VerbFilter;
      use yii\filters\AccessControl;

      /**
       * Site controller
       */
      class SiteController extends Controller
      {
          /**
           * @inheritdoc
           */
          public function behaviors()
          {
              return [
                  'access' => [
                      'class' => AccessControl::className(),
                      'rules' => [
                          [
                              'actions' => [
                                  'login',
                                  'error',
                              ],
                              'allow'   => true,
                          ],
                          [
                              'actions' => [
                                  'logout',
                                  'index',
                                  'analytics',
                              ],
                              'allow'   => true,
                              'roles'   => [ '@' ],
                          ],
                      ],
                  ],
                  'verbs'  => [
                      'class'   => VerbFilter::className(),
                      'actions' => [
                          'logout'    => [ 'post' ],
                          'analytics' => [ 'post' ],
                      ],
                  ],
              ];
          }

          /**
           * @inheritdoc
           */
          public function actions()
          {
              return [
                  'error' => [
                      'class' => 'yii\web\ErrorAction',
                  ],
              ];
          }

          /**
           * Displays homepage.
           *
           * @return string
           */
          public function actionIndex()
          {
              $settings = Settings::getInstance();

              if (empty( $settings->analytics_key )) {
                  return $this->render('instruction');
              } else {
                  return $this->render('index');
              }
          }

          /**
           * Login action.
           *
           * @return string
           */
          public function actionLogin()
          {
              if (!Yii::$app->user->isGuest) {
                  return $this->goHome();
              }

              $model = new LoginForm();
              if ($model->load(Yii::$app->request->post()) && $model->login()) {
                  return $this->goBack();
              } else {
                  return $this->renderPartial(
                      'login',
                      [
                          'model' => $model,
                      ]
                  );
              }
          }

          /**
           * Logout action.
           *
           * @return string
           */
          public function actionLogout()
          {
              Yii::$app->user->logout();

              return $this->goHome();
          }
      }