Yii2.0实用功能技巧解密之——分页功能

function actionIndex()
{
        $query = Article::find()->where([‘status‘ => 1]);
        $countQuery = clone $query;
        $pages = new Pagination([‘totalCount‘ => $countQuery->count()]);
        $models = $query->offset($pages->offset)
          ->limit($pages->limit)
          ->all();

        return $this->render(‘index‘, [
           ‘models‘ => $models,
           ‘pages‘ => $pages,
        ]);
}

foreach ($models as $model) {
        // display $model here
}

// display pagination
echo LinkPager::widget([
        ‘pagination‘ => $pages,
]);

public function getPagedRows($query,$config=[])
{
        $countQuery = clone $query;
        $pages=new Pagination([‘totalCount‘ => $countQuery->count()]);
        if(isset($config[‘pageSize‘]))
        {
                $pages->setPageSize($config[‘pageSize‘],true);
        }

        $rows = $query->offset($pages->offset)->limit($pages->limit);
        if(isset($config[‘order‘]))
        {
                $rows = $rows->orderBy($config[‘order‘]);
        }
        $rows = $rows->all();


        $rowsLable=‘rows‘;
        $pagesLable=‘pages‘;

        if(isset($config[‘rows‘]))
        {
                $rowsLable=$config[‘rows‘];
        }
        if(isset($config[‘pages‘]))
        {
                $pagesLable=$config[‘pages‘];
        }

        $ret=[];
        $ret[$rowsLable]=$rows;
        $ret[$pagesLable]=$pages;

        return $ret;
}

function actionIndex()
{
        $query = Article::find()->where([‘status‘ => 1]);
        //因为前台的数据对象为models，所以设置rows名称为models
        $locals = $this->getPagedRows($query, [‘order‘=>‘time desc‘, ‘pageSize’=>5, ‘rows‘=>‘models‘]);
        return $this->render(‘index‘, $locals);
}