yii2分页不起作用

Question

我做了分页，但所有的帖子（我有8个）显示在每一页上。我想在每个页面上显示其中的4个。我的错误在哪里？我认为问题出在count($posts)，因为在我看过的其他帖子中，他们使用的是$posts->count()，但这种方法对我不起作用。感谢每一个建议！

控制器动作：

public function actionIndex() 
{ 
    $searchModel = new PostSearch(); 
    $postModel = new \app\models\Post(); 
    $userModel = new \app\models\BlogUser(); 

    $posts = $postModel::find()->orderBy(['post_id' => SORT_DESC])->all(); 

    $pagination = new Pagination(['totalCount' => count($posts), 'pageSize' => 4]); 

    $dataProvider = $searchModel->search(Yii::$app->request->queryParams); 

    return $this->render('index', [ 
     'searchModel' => $searchModel, 
     'dataProvider' => $dataProvider, 
     'postModel' => $postModel, 
     'userModel' => $userModel, 
     'posts' => $posts, 
     'pagination' => $pagination 
    ]); 
} 

视图的index.php：

<div class="content"> 
     <div class="row"> 
      <?php Pjax::begin(['id' => 'posts']) ?> 
      <div class="col-md-12"> 
       <?php 

        foreach ($posts as $post) 
        { 
         $id = $post->user_id; 

         $user = $userModel::find()->where(['id' => $id])->one(); 

         echo "<div class='col-md-6 blog-post'> 
            <div class='col-md-3 post-prof-img'>" 
             . Html::img('../images/' . $user->image, ['alt' => 'image', 'class' => 'tall img-circle']) . 
            "<p class='text-center title-par'><strong><em> $user->username </em></strong></p> 
            <p class='text-center'> $post->date_create</p> 
            </div> 
            <div class='col-md-9 post-cont'><p>" 
             . Html::a('Click for more!',['view', 'id' => $post->post_id]) . 
             "</p><label class='text-center'> $post->title : </label> 
             <div class='fade-post'> 
              $post->content 
             </div> 
            </div> 
           </div>"; 
        } 

       ?> 

      </div> 
      <?php Pjax::end() ?> 
     </div> 

    </div> 

    <div class="row"> 
     <div class="col-md-3"> 
      <?= Html::a('Create Post', ['create'], ['class' => 'btn btn-primary']) ?> 
      <?= Html::submitButton('Search', ['class' => 'btn search-button', 'style' => 'color: blue']) ?> 
     </div> 
    </div> 

Answer 1

您应该使用dataProvider-> pagination-> pageSize的（而不是创建一个新的分页和通以提供）

$dataProvider = $searchModel->search(Yii::$app->request->queryParams); 
    $dataProvider->pagination->pageSize=4; 

，并在视图中，您可以使用如：一个ListView控件作为

/* index.php view file*/ 

<?= 
    ListView::widget([ 
    'dataProvider' => $dataProvider, 
    ]); 
?> 

或一个gridview

<?= GridView::widget([ 
     'dataProvider' => $dataProvider, 
     'filterModel' => $searchModel, 
     'columns' => [ 
      ['class' => 'yii\grid\SerialColumn'], 
      'your_column1', 
      'your_column2', 
      ..... 

      ['class' => 'yii\grid\ActionColumn', 
      'contentOptions' => ['style' => 'width:84px; font-size:18px;']], 
     ], 
    ]); ?>