before documentcontroller

<?php


namespace app\controllers;


use app\models\Document;
use Imagick;
use Spatie\PdfToImage\Pdf;
use Yii;
use yii\filters\AccessControl;
use yii\helpers\Url;
use yii\web\UploadedFile;

class DocumentController extends AbstractController
{
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
        ];
    }

    public function actionUpdate($id = null)
    {
        if ($id) {
            $model = $this->findModel($id, Document::className());
        } else {
            $model = new Document;
        }
        if ($post = Yii::$app->request->post()) {
            if ($model->load($post) && $model->save()) {
                $this->notice('Your changes have been saved successfully.');
            } else {
                $this->notice($model->errors, 'error');
            }
            return $this->redirect(['site/dashboard']);
        }

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


    public function actionSave()
    {

        if ($id = Yii::$app->request->post('document_id')) {
            $model = $this->findModel($id, Document::className());
        } else {
            $model = new Document;
        }
        $model->updated_at = time();


        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(Url::to(['site/dashboard']));

        }
        return 'failed!';
    }


    public function actionGeneratePdf($id)
    {
        $model = Document::findOne(['id' => $id]);
        $pdf = Yii::$app->pdf;
        $pdf->content = $this->renderPartial('document', ['model'=>$model]);
        $pdf->cssInline = '
        .title-page {
            padding-top:50%;
            text-align:center;
            height:100%;
        }

        .title {
            padding: 10px 0 10px 0;
            border-top: 1px solid black;
            border-bottom: 1px solid black;
            font-size: 20px;
            font-weight: bold;
        }
        ';
        $pdf->execute('SetHeader', $this->renderPartial('parts/header'));
        return $pdf->render();
    }

    public function actionDelete(array $id)
    {
        return $this->delete(Document::className(), $id);
    }


}