新手-Yii2:无法在控制器的视图上显示数据

Yii2新手，从教程中学习了一些演示，尝试复制代码并在自己的演示中使用，但似乎失败了。这是代码：

教程-控制器：

namespace app'controllers;
use yii'web'Controller;
use app'models'Article;
use Yii;
class ArticleController extends Controller{
    public function actionIndex(){
        $article = Article::find();
        //echo $article->count();
        $pagination = new 'yii'data'Pagination(['totalCount'=>$article->count(), 'pageSize'=>3]);
        $data = $article->offset($pagination->offset)->limit($pagination->limit)->all();
        //print_r($data);
        return $this->render('index',['data' => $data, 'pagination' => $pagination]);
    }

教程-视图：

<?php
    use yii'helpers'Url;
?>
<p style = "text-align:right">
    <a href="<?=Url::to(['add'])?>" class="btn btn-primary">ADD</a>
</p>

<table class="table table-hover">
    <tr>
        <th>id</th><th>Title</th><th>Count</th><th>Status</th><th>Update Time</th><th>By</th>
    </tr>
    <?php print_r($data); foreach($data as $v){?>
    <tr>
        <td><?=$v->id?></td><td><?=$v->title?></td><td><?=$v->count?></td><td><?=($v->status == '1' ? 'Y' :'N')?></td>
        <td><?=date("Y-m-d H:i:s",$v->update_date)?></td>
        <td><a href="<?=Url::to(['edit', 'id'=>$v->id])?>">Edit</a> | <a href="<?=Url::to(['delete','id'=>$v->id])?>">Del</a></td>
    </tr>
    <?php }?>
</table>
<div style="float:right">
    <?='yii'widgets'LinkPager::widget([
        'pagination' => $pagination,
        'options' =>[
            'class' =>'pagination',
            ],
        ])
    ?>
</div>

使用print_r（$data），它显示如下：

Array ( [0] => app'models'Article Object ( [_attributes:yii'db'BaseActiveRecord:private] => Array ( [id] => 1 [flag] => 0 [title] => 13123OOOO [description] => tttt1 [content] => tstsets 
[count] => 1 [status] => 1 [update_date] => 1462291610 [date] => 0 ) [_oldAttributes:yii'db'BaseActiveRecord:private] => Array ( [id] => 1 [flag] => 0 [title] => 13123OOOO 
[description] => tttt1 [content] => tstsets [count] => 1 [status] => 1 [update_date] => 1462291610 [date] => 0 ) [_related:yii'db'BaseActiveRecord:private] => Array ( ) 
[_errors:yii'base'Model:private] => [_validators:yii'base'Model:private] => [_scenario:yii'base'Model:private] => default [_events:yii'base'Component:private] => Array ( ) 
[_behaviors:yii'base'Component:private] => Array ( ) ) 

但在我自己的代码上：控制器：

namespace app'controllers;
use yii'web'Controller;
use app'models'Inventory;
class InventoryController extends Controller{
    public function actionIndex(){
        //$inventory = new Inventory();
        $inventory = Inventory::find()->asArray()->all();
        print_r($inventory);
        return $this->renderpartial('index',['inventory' => $inventory]);
    }

视图：

<?php
use yii'helpers'Html;
use yii'helpers'Url;
echo "<br>";
print_r($inventory);
?>
<h2>Inventory Status</h2>
<table class = "table table-hover">
    <tr>
        <th>ID</th><th>Model</th><th>Office</th><th>Warehouse</th>
    </tr>
    <tr>
         <?php foreach($inventory as $item){ ?>
        <tr>
            <td><?=$item->id ?></td><td><?=$item->name ?></td><td><?=$item->office ?></td><td><?=$item->warehouse ?></td>
        </tr>
        <?php }?>
    </tr>
    <tr>
        <td>?<td>Apple</td><td>1</td><td>2</td>
    </tr>
</table>

我的print_r（$inventory）是这样的：

Array ( [0] => Array ( [id] => 1 [name] => Apple [office] => 1 [warehouse] => 2 ) [1] => Array ( [id] => 2 [name] => Android [office] => 2 [warehouse] => 1 ) ) 

并且使用foreach（）｛｝但无法显示任何数据，如何修复？