guild/backend/modules/questionnaire/controllers/QuestionnaireController.php

<?php

namespace backend\modules\questionnaire\controllers;

use backend\modules\questionnaire\models\QuestionSearch;
use Yii;
use backend\modules\questionnaire\models\Questionnaire;
use backend\modules\questionnaire\models\QuestionnaireSearch;
use yii\data\ActiveDataProvider;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;
use yii\web\Response;

/**
 * QuestionnaireController implements the CRUD actions for Questionnaire model.
 */
class QuestionnaireController extends Controller
{
    /**
     * {@inheritdoc}
     */
    public function behaviors()
    {
        return [
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'delete' => ['POST'],
                ],
            ],
        ];
    }

    /**
     * Lists all Questionnaire models.
     * @return mixed
     */
    public function actionIndex()
    {
        $searchModel = new QuestionnaireSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

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

    /**
     * Displays a single Questionnaire model.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionView($id)
    {
        $model = $this->findModel($id);
        $questionSearchModel = new QuestionSearch();
        $questionDataProvider = new ActiveDataProvider([
            'query' => $model->getQuestions(),
            'pagination' => [
                'pageSize' => 20,
            ],
        ]);

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

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

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            if ($category_id !== null)
            {
                return $this->redirect(['questionnaire-category/view', 'id' => $model->category_id]);
            }
            return $this->redirect(['view', 'id' => $model->id]);
        }

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

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

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            if ($category_id !== null)
            {
                return $this->redirect(['questionnaire-category/view', 'id' => $category_id]);
            }
            return $this->redirect(['view', 'id' => $model->id]);
        }

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

    /**
     * Deletes an existing Questionnaire model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param integer $id
     * @return Response
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionDelete(int $id, $category_id = null)
    {
        $this->findModel($id)->delete();

        if ($category_id !== null)
        {
            return $this->redirect(['questionnaire-category/view', 'id' => $category_id]);
        }

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

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

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