title: Yii2 dropdownlist onchange
body: <p>In Yii 1 i could set onchange event for dropDownList by this method:</p>
  
  <pre><code>CHtml::dropDownList('id', $select, $list, array('onchange'=&gt;'this.form.submit()'))
  </code></pre>
  
  <p>And it was pretty good. But in Yii 2 it doesn't work, how do i solve this issue?</p>