zxcms/backend/controllers/SliderController.php

<?php

namespace backend\controllers;

use core\entities\Slider;
use core\forms\SliderForm;
use core\services\SliderService;
use Yii;
use yii\data\ActiveDataProvider;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;


class SliderController extends Controller
{
    private $service;

    public function __construct($id, $module, SliderService $service, $config = [])
    {
        parent::__construct($id, $module, $config);
        $this->service = $service;
    }

    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
	        'access' => [
		        'class' => AccessControl::className(),
		        'rules' => [
			        [
				        'actions' => ['create', 'view', 'index', 'update', 'delete'],
				        'allow' => true,
				        'roles' => ['SliderManagement'],
			        ],
			        [    // all the action are accessible to admin
				        'allow' => true,
				        'roles' => ['admin'],
			        ],
		        ],
	        ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'delete' => ['POST'],
                ],
            ],
        ];
    }

    public function actionIndex()
    {
        //$searchModel = new UserSearch();
        //$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
	    $query = Slider::find();
	    $dataProvider = new ActiveDataProvider([
		    'query' => $query,
		    'pagination' => [
			    'pageSize' => 20,
		    ],
		    'sort' => [
			    'defaultOrder' => [
				    'id' => SORT_ASC,
			    ]
		    ],
	    ]);

        return $this->render('index', [
            'dataProvider' => $dataProvider,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return string
	 * @throws NotFoundHttpException
	 */
    public function actionView($id)
    {
        return $this->render('view', [
            'model' => $this->findModel($id),
        ]);
    }

    /**
     * Creates a new User model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     * @return mixed
     */
    public function actionCreate()
    {
        $form = new SliderForm();
        $form->scenario = Slider::SCENARIO_CREATE;
        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
            try {
                $slider = $this->service->create($form);
                return $this->redirect(['view', 'id' => $slider->id]);
            } catch (\DomainException $e) {
                Yii::$app->errorHandler->logException($e);
                Yii::$app->session->setFlash('error', $e->getMessage());
            }
        }
        return $this->render('create', [
            'model' => $form,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return string|\yii\web\Response
	 * @throws NotFoundHttpException
	 */
    public function actionUpdate($id)
    {
        $slider = $this->findModel($id);

        $form = new SliderForm($slider);
	    $form->scenario = Slider::SCENARIO_UPDATE;
        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
            try {
                $this->service->edit($slider->id, $form);
                return $this->redirect(['view', 'id' => $slider->id]);
            } catch (\DomainException $e) {
                Yii::$app->errorHandler->logException($e);
                Yii::$app->session->setFlash('error', $e->getMessage());
            }
        }
        return $this->render('update', [
            'model' => $form,
            'slider' => $slider,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return \yii\web\Response
	 */
    public function actionDelete($id)
    {
        $this->service->remove($id);
        return $this->redirect(['index']);
    }


    protected function findModel($id): ?Slider
    {
        if (($model = Slider::findOne($id)) !== null) {
            return $model;
        } else {
            throw new NotFoundHttpException('The requested page does not exist.');
        }
    }
}