frontend/controllers/SiteController.php

<?php
    namespace frontend\controllers;
    use artbox\catalog\models\Brand;
    use artbox\catalog\models\Category;
    use artbox\catalog\models\Product;
    use artbox\core\models\Feedback;
    use common\models\Settings;
    use Yii;
    use yii\web\BadRequestHttpException;
    use yii\web\Controller;
    use yii\filters\VerbFilter;
    use yii\web\Response;
    
    /**
     * Site controller
     */
    class SiteController extends Controller
    {
        /**
         * @inheritdoc
         */
        public function actions()
        {
            return [
                'error' => [
                    'class' => 'yii\web\ErrorAction',
                ],
            ];
        }
        
        /**
         * @inheritdoc
         */
        public function behaviors()
        {
            return [
                'verbs' => [
                    'class'   => VerbFilter::className(),
                    'actions' => [
                        'feedback' => [ 'post' ],
                    ],
                ],
            ];
        }
        
        /**
         * Displays homepage.
         *
         * @return mixed
         */
        public function actionIndex()
        {
            $categories = Category::find()
                                  ->with('categories.lang', 'lang')
                                  ->where([ 'level' => 0 ])
                                  ->all();
            $topItems = Product::find()
                               ->with('lang', 'image', 'variants')
                               ->where('mask & 1 != 0')
                               ->limit(20)
                               ->all();
            $newItems = Product::find()
                               ->with('lang', 'image', 'variants')
                               ->where('mask & 2 != 0')
                               ->limit(20)
                               ->all();
            $saleItems = Product::find()
                                ->with('lang', 'image', 'variants')
                                ->where('mask & 4 != 0')
                                ->limit(20)
                                ->all();
            $productCount = Product::find()
                                   ->count();
            $brandCount = Brand::find()
                               ->count();
            $brands = Brand::find()
                           ->where([ 'status' => true ])
                           ->andWhere(
                               [
                                   'not',
                                   [ 'image_id' => null ],
                               ]
                           )
                           ->orderBy([ 'sort' => SORT_ASC ])
                           ->limit(6)
                           ->with('image')
                           ->all();
            return $this->render(
                'index',
                [
                    'categories'   => $categories,
                    'topItems'     => $topItems,
                    'newItems'     => $newItems,
                    'saleItems'    => $saleItems,
                    'productCount' => $productCount,
                    'brandCount'   => $brandCount,
                    'brands'       => $brands,
                ]
            );
        }
        
        /**
         * Displays contact page.
         *
         * @return mixed
         */
        public function actionContact()
        {
            $contact = new Feedback();
            return $this->render(
                'contact',
                [
                    'contact' => $contact,
                ]
            );
        }
        
        /**
         * Displays about page.
         *
         * @return mixed
         */
        public function actionAbout()
        {
            return $this->render('about');
        }
        
        /**
         * Action to view robots.txt file dinamycli
         *
         * @return string
         */
        public function actionRobots()
        {
            $response = \Yii::$app->response;
            /**
             * @var Settings $settings
             */
            $settings = Settings::find()
                                ->one();
            $temp = tmpfile();
            fwrite($temp, $settings->robots);
            $meta = stream_get_meta_data($temp);
            $response->format = $response::FORMAT_RAW;
            $response->headers->set('Content-Type', 'text/plain');
            return $this->renderFile($meta[ 'uri' ]);
        }
        
        public function actionFeedback()
        {
            Yii::$app->response->format = Response::FORMAT_JSON;
            if (empty( Yii::$app->request->post() )) {
                throw new BadRequestHttpException();
            } else {
                $model = new Feedback();
                if ($model->load(Yii::$app->request->post()) && $model->save()) {
                    return [
                        'success' => true,
                        'message' => 'Success message',
                        'alert'   => '<div class="alert alert-success">
            <h3>Success</h3>
            <p>
              Success text
            </p>
          </div>',
                    ];
                } else {
                    return [
                        'success' => false,
                        'error'   => $model->errors,
                    ];
                }
            }
        }
    }