title: Yii2 Accessing another controller/view in view
body: <p>what I am trying to do is like this:</p>
  
  <pre><code>$this-&gt;render('//article/overview'); ?&gt;
  </code></pre>
  
  <p>The contents of <code>overview</code> is like this:</p>
  
  <pre><code>&lt;?php
  use yii\helpers\Html;
  use yii\widgets\DetailView;
  
  /* @var $this yii\web\View */
  /* @var $model app\models\Article */
  
  $this-&gt;title = $model-&gt;subject;
  $this-&gt;params['breadcrumbs'][] = ['label' =&gt; Yii::t('app', 'Articles'), 'url' =&gt; ['index']];
  $this-&gt;params['breadcrumbs'][] = $this-&gt;title;
  \yii\web\YiiAsset::register($this);
  ?&gt;
  &lt;div class="article-view"&gt;
  
      &lt;h1&gt;&lt;?= Html::encode($this-&gt;title) ?&gt;&lt;/h1&gt;
  &lt;div style="margin-top:20px;"&gt;&lt;?php echo $model-&gt;contents; ?&gt;&lt;/div&gt;
  </code></pre>
  
  <p>and the related controller code is like:</p>
  
  <pre><code>public function actionOverview($id=1)
      {
          return $this-&gt;render('overview', [
              'model' =&gt; $this-&gt;findModel($id),
          ]);
      }
  </code></pre>