php - 如何设置要在 yii2 GridView 中显示的项目数量？

Question

Controller 代码:

 public function actionIndex() {
        $searchModel = new ProductSearch();
        if (Yii::$app->request->get('per-page') !== NULL) {
            $searchModel->_pageSize = Yii::$app->request->get('per-page');
        }
        if ($searchModel->load(Yii::$app->request->post())) {
            $searchModel->_pageSize = intval(Yii::$app->request->post()['ProductSearch']['_pageSize']);
            $_SESSION['page_size'] = $searchModel->_pageSize;
        }


            if (isset($_SESSION['page_size']))
            {
                $dataProvider = $searchModel->search(Yii::$app->request->queryParams, null ,$_SESSION['page_size']);
            }
            else
            {
                $dataProvider = $searchModel->search(Yii::$app->request->queryParams, null, 20);
            }
            $dataProvider->pagination->pageSize=10;
            $this->layout = 'main_ecommerce';
            return $this->render('index', [
                        'searchModel' => $searchModel,
                        'dataProvider' => $dataProvider,

            ]);

查看代码:

if (isset($_SESSION['page_size']))
                {
                $searchModel->_pageSize = $_SESSION['page_size'];
                }
                Pjax::begin();
                $form = ActiveForm::begin();
                echo $form->field($searchModel, '_pageSize', [
                            'inputOptions' => [
                                    'placeholder' => 'records',
                                    'style' => 'overflow-x: auto;',
                                    'class' => 'form-control input-xsmall input-inline' ],
                        ])->label(Yii::t('app', 'Records : '))
                        ->dropDownList(['10'=> 10, '20' => 20, '50' => 50], ['onchange'=>"this.form.submit();"]);
                ActiveForm::end();
                Pjax::end();
                echo $searchModel->_pageSize;
                ?>
             <?= GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,                 
        'pager' => [
            'options'=>['class'=>'pagination'],   
            'prevPageLabel' => Html::tag('i', "", ['class' => 'fa fa-angle-left']),   
            'nextPageLabel' => Html::tag('i', "", ['class' => 'fa fa-angle-right']),   
            'firstPageLabel'=>Html::tag('i', "", ['class' => 'fa fa-angle-double-left']),  
            'lastPageLabel'=>  Html::tag('i', "", ['class' => 'fa fa-angle-double-right']),   
        ],
        'columns' => [
            ['class' => 'yii\grid\SerialColumn'],

图片显示GridView只显示了30行记录。我如何调整它以便我可以显示，例如每页 50 条记录。不知何故，一旦我已经设置了它，它就会一直显示一个小于我设置的值。这是为什么？

Answer 1

尝试使用

$dataProvider->pagination->pageSize=10;

在返回 searchmodel 和 dataprovider 之前在 actionIndex 中

例如:

    $searchModel = new UserMasterSearch();
    $dataProvider = $searchModel->search(Yii::$app->request->post());

    $dataProvider->pagination->pageSize=10;

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