title: Reduce string length in qweb odoo
body: <p>How reduce string length in qweb?</p>
  
  <p>Example:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;p t-field="doc.name" /&gt;
  </code></pre>
  
  <p>return <strong>stackoverflow</strong> I want remowe last 8 character and get <strong>stack</strong></p>