EventsController

    public function actionIndex()
    {
        $lessons = Events::find()->all();

        foreach ($lessons as $lesson)
        {
                $time = Timetable::findOne($lesson->timetable_id);

                $event = new Event();
                $event->id = $lesson->id;
                $event->title = $lesson->topic;
                $event->start = $lesson->date . 'T' . $time->start;
                $event->end = $lesson->date . 'T' . $time->finish;
                $events[] = $event;
        }

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

    /**
     * Displays a single Events model.
     * @param integer $id
     * @return mixed
     */
    public function actionView($id)
    {
        return $this->renderAjax('view', [
            'model' => $this->findModel($id),
        ]);
    }

    /**
     * Creates a new Events model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     * @param $date
     * @return mixed
     */
    public function actionCreate($date)
    {
        $model = new Events();
        $model->date = $date;

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['/events']);
        } else {
            return $this->renderAjax('create', [
                'model' => $model,
            ]);
        }
    }

    /**
     * Updates an existing Events model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id
     * @return mixed
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect('/web/events');
        } else {
            return $this->renderAjax('update', [
                'model' => $model,
            ]);
        }
    }

    /**
     * Deletes an existing Events model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param integer $id
     * @return mixed
     */
    public function actionDelete($id)
    {
        $this->findModel($id)->delete();

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