controllers/ItemController.php
public function actionCreate()
    {
        $model = new Item();

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['index']);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
        }
    }
public function actionCreate()
    {
        $model = new Item();

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['index']);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
        }
    }
Creates a new Item model.
If creation is successful, the browser will be redirected to the 'view' page.
@return mixed