servicio-autos-api/modules/v1/controllers/BannerPublicoController.php

<?php

namespace v1\controllers;

use common\data\Respuesta;
use common\rest\JsonController;
use yii\db\Expression;
use yii\web\NotFoundHttpException;

class BannerPublicoController extends JsonController {

  public $modelClass = "v1\models\Banner";

  public function actionIndex() {
    $id = trim($this->req->get("id", ""));

    $query = $this->queryInicial;

    if($id !== "") {
      $query->andWhere(["id" => $id]);
    }

    $modelo = $query->one();
    if($modelo === null) {
      throw new NotFoundHttpException('No se encontró el registro');
    }
    $media = $modelo->media;
    /** @var \v1\models\Media $media */
    if($media === null) {
      throw new NotFoundHttpException('No se encontró la imagen');
    }

    if(!$media->ruta) {
      throw new NotFoundHttpException('No se encontró la imagen');
    }
    return $this->redirect($media->ruta);
  }

}