title: How to replace a meta tag in Yii?
body: <p>I know that I can register a new meta tag in Yii and I know how to do it, but I need to </p>
  
  <p>replace the default tag that I have set, because when I am on a article, I want to insert the </p>
  
  <p>short description of the article in the meta tag;</p>
  
  <p>How can I manage the meta tags?</p>