title: checking checkboxList in Yii2 at the time of updating post?
body: <p>I want to checked Yii2 CheckboxList at time of post update 
  my list of options is mention below 
  <a href="https://i.stack.imgur.com/9q1R4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9q1R4.png" alt="enter image description here"></a></p>
  
  <pre><code>&lt;?= $form-&gt;field($category,'title')-&gt;checkboxList([1=&gt;'Latest news','2'=&gt;'Unit Performance','3'=&gt;'Latest Technology'])-&gt;label(FALSE); ?&gt;
  </code></pre>
  
  <p>I want to check some item at time of update which is selected at the time of post creation <code>like latest news</code> .</p>
  
  <p><a href="https://i.stack.imgur.com/fSJf8.png" rel="noreferrer"><img src="https://i.stack.imgur.com/fSJf8.png" alt="enter image description here"></a></p>
  
  <p>Kindly help me</p>