yii2-netdisk/controllers/AdminController.php

<?php

namespace app\controllers;

use app\models\User;
use app\models\UserSearch;
use Throwable;
use yii\db\StaleObjectException;
use yii\filters\AccessControl;
use yii\filters\VerbFilter;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\web\Response;

class AdminController extends Controller
{
    /**
     * @inheritDoc
     */
    public function behaviors(): array
    {
        return array_merge(
            parent::behaviors(),
            [
                'access' => [
                    'class' => AccessControl::class,
                    'rules' => [
                        [
                            'allow' => true,
                            'actions' => ['index', 'system', 'user', 'info', 'user-view', 'user-create', 'user-update', 'user-delete'],
                            'roles' => ['admin'], // only admin can do these
                        ]
                    ],
                ],
                'verbs' => [
                    'class' => VerbFilter::class,
                    'actions' => [
                        'index' => ['GET'],
                        'system' => ['GET'],
                        'user' => ['GET'],
                        'user-view' => ['GET'],
                        'user-create' => ['GET', 'POST'],
                        'user-update' => ['GET', 'POST'],
                        'user-delete' => ['POST'],
                        'info' => ['GET'],
                    ],
                ],
            ]
        );
    }

    public function init(): void
    {
        parent::init();
        $this->layout = 'admin_main';
    }

    /**
     * @return string
     */
    public function actionIndex(): string
    {
        return $this->render('index');
    }

    /**
     * @return string
     */
    public function actionSystem(): string
    {
        return $this->render('system');
    }

    /**
     * Lists all User.
     *
     * @return string
     */
    public function actionUser(): string
    {
        $searchModel = new UserSearch();
        $dataProvider = $searchModel->search($this->request->queryParams);

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

    /**
     * Displays a single User model.
     * @param int $id ID
     * @return string
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionUserView(int $id): string
    {
        return $this->render('user_view', [
            'model' => $this->findModel($id),
        ]);
    }

    /**
     * Creates a new User model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     * @return string|Response
     */
    public function actionUserCreate(): Response|string
    {
        $model = new User();

        if ($this->request->isPost) {
            if ($model->load($this->request->post()) && $model->save()) {
                return $this->redirect(['user_view', 'id' => $model->id]);
            }
        } else {
            $model->loadDefaultValues();
        }

        return $this->render('user_create', [
            'model' => $model,
        ]);
    }

    /**
     * Updates an existing User model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param int $id ID
     * @return string|Response
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionUserUpdate(int $id): Response|string
    {
        $model = $this->findModel($id);

        if ($this->request->isPost && $model->load($this->request->post()) && $model->save()) {
            return $this->redirect(['user_view', 'id' => $model->id]);
        }

        return $this->render('user_update', [
            'model' => $model,
        ]);
    }

    /**
     * Deletes an existing User model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param int $id ID
     * @return Response
     * @throws NotFoundHttpException if the model cannot be found
     * @throws Throwable
     * @throws StaleObjectException
     */
    public function actionUserDelete(int $id): Response
    {
        $this->findModel($id)->delete();

        return $this->redirect(['user']);
    }

    /**
     * Finds the User model based on its primary key value.
     * If the model is not found, a 404 HTTP exception will be thrown.
     * @param int $id ID
     * @return User the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel(int $id): User
    {
        if (($model = User::findOne(['id' => $id])) !== null) {
            return $model;
        }

        throw new NotFoundHttpException('The requested page does not exist.');
    }

    /**
     * @return string
     */
    public function actionInfo(): string
    {
        return $this->render('info');
    }
}