FRONTEND_MVC/controllers/ReportTopicController.php

<?php

namespace app\controllers;
use app\models\ReportTopic;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\data\ActiveDataProvider;

class ReportTopicController extends \yii\web\Controller
{
    public function actionIndex()
    {
		$news_query = ReportTopic::find()->where(['<>', 'title', ''])->where([ 'active'=>1]);
		$pages = new \yii\data\Pagination(['totalCount' => $news_query->count(), 'pageSize'=>50]);

		$gets = \Yii::$app->request->get();
		$valid_get = array_filter($gets, function($k) {
			$valid = ['page'=>true, 'per-page'=>false];
			return isset( $valid[$k] );
		}, ARRAY_FILTER_USE_KEY);
		$pages->pageSizeParam = false;
//		$pages->params = $valid_get;
		$pages->route = \Yii::$app->urlManager->createUrl(['photo']);
        $dataProvider = new ActiveDataProvider([
            'query' => $news_query,
            'pagination' => $pages,
            'sort' => [
                'defaultOrder' => [
                    'id' => SORT_DESC,
                ]
            ],
        ]);

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

    public function actionView($topic){
		if( is_numeric($topic) ){
			$model = ReportTopic::findOne(['id'=>$topic]);
			if( ( !$model instanceof ReportTopic ) || $model->active == 0 ){
				throw new NotFoundHttpException("Стр. не найдена");
			}
			return $this->render("view",["model"=>$model]);
		}
		throw new NotFoundHttpException("Стр. не найдена");
    }

    public function actionWidget($topic){
		if( is_numeric($topic) ){
			$model = ReportTopic::findOne(['id'=>$topic]);
			if( ( !$model instanceof ReportTopic )  ){
				throw new NotFoundHttpException("Стр. не найдена");
			}
			return $this->renderPartial("widget",["model"=>$model]);
		}
		throw new NotFoundHttpException("Стр. не найдена");
    }

}