Duplicate records from another category

[TsarS]

i'm using ScrollPager

 ` <?php
            echo ListView::widget([
                'dataProvider' => $dataProvider,
                'itemOptions' => ['class' => '.item'],
                'itemView' => '_item_view',
                'pager' => ['class' => ScrollPager::className(),
                    'enabledExtensions' => [
                        ScrollPager::EXTENSION_TRIGGER => 2000,
                        ScrollPager::EXTENSION_PAGING,
                        ScrollPager::EXTENSION_NONE_LEFT,
                        ScrollPager::EXTENSION_SPINNER => false],
                    'spinnerTemplate' => '<div class="ias-spinner" style="text-align: center; z-index:1800; color:red;"><img src="{src}"/></div>',
                    'noneLeftText' => ''
                ],
            ]);
          }  ?>`

and getting $dataprovider from base

   `public function actionPhotos() {
    $params = Yii::$app->request->queryParams;
  $searchModel = new PhotosSearch();
    $dataProvider = $searchModel->search($params);
    return $this->render('photos', [
                'searchModel' => $searchModel,
                'dataProvider' => $dataProvider
    ]);}`

Where $params - number of category. And when i get photos with /photos/6 (.3..4..5) - i see several photos from another category. But it saved correctly in my mysql (and i get it correctly in my gridview in admin panel). Sorry for poor English.