FRONTEND_MVC/controllers/AuthorController.php

<?php

namespace app\controllers;
use app\models\Authors;
use yii\web\Controller;
use yii\web\NotFoundHttpException;


class AuthorController extends \yii\web\Controller
{
    public function actionIndex()
    {
        return $this->render('index');
    }

    public function actionView($author){
		if( is_numeric($author) ){
			$model = Authors::findOne(['id'=>$author]);
		}else{
			$model = Authors::findOne(['url'=>$author]);
		}
		if( ( !$model instanceof Authors ) || $model->show == 0 ){
			throw new NotFoundHttpException("Автор не найден");
        }
        return $this->render("person",["model"=>$model]);
    }

}