backend/controllers/BrandsController.php

<?php
namespace backend\controllers;
use Yii;
use common\models\Brands;
use common\models\BrandsSearch;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;
use yii\web\UploadedFile;
/**
 * BrandsController implements the CRUD actions for Brands model.
 */
class BrandsController extends Controller
{
    public $layout = "/column";
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'actions' => ['login', 'error', 'download-photo','delete-image' ],
                        'allow' => true,
                    ],
                    [
                        'actions' => ['logout', 'index','create','update','view','delete',],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'logout' => ['post'],
                ],
            ],
        ];
    }
    /**
     * Lists all Brands models.
     * @return mixed
     */
    public function actionIndex()
    {
        $searchModel = new BrandsSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
        return $this->render('index', [
            'searchModel' => $searchModel,
            'dataProvider' => $dataProvider,
        ]);
    }
    /**
     * Displays a single Brands model.
     * @param string $id
     * @return mixed
     */
    public function actionView($id)
    {
        return $this->render('view', [
            'model' => $this->findModel($id),
        ]);
    }
    /**
     * Creates a new Brands model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     * @return mixed
     */
    public function actionCreate()
    {
        $model = new Brands();
        return $this->saveIMG( $model, 'create' );
    }
    /**
     * Updates an existing Brands model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param string $id
     * @return mixed
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);
        return $this->saveIMG( $model, 'update' );
    }
    /**
     * Deletes an existing Brands model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param string $id
     * @return mixed
     */
    public function actionDelete($id)
    {
        $this->findModel($id)->delete();
        return $this->redirect(['index']);
    }
    /**
     * Finds the Brands model based on its primary key value.
     * If the model is not found, a 404 HTTP exception will be thrown.
     * @param string $id
     * @return Brands the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel($id)
    {
        if (($model = Brands::findOne($id)) !== null) {
            return $model;
        } else {
            throw new NotFoundHttpException('The requested page does not exist.');
        }
    }
    /**
     * @param $model
     * @return string|\yii\web\Response
     * сохраняет картинку и валидирует модель
     * выбрасывает исключение в случае ошибки
     */
    protected function saveIMG( $model, $action ){
        if( $model->load(Yii::$app->request->post()) ) {
            $model->file = UploadedFile::getInstance($model, 'file');
            $model->IMG = $model->file->name;
            // первый проход - валидируем, сохраняем файл,
            if ( $model->validate() ) {
                // сохраним файл
                $model->file->saveAs( Yii::getAlias('@storage') . '/files/brands/' . $model->IMG );
                if ( $model->save() ) {
                    return $this->redirect(['index']);
                }
            }
            $model->throwStringErrorException();
        } else {
            return $this->render($action, [
                'model' => $model,
            ]);
        }
    }
}