title: django-template assign url to a variable
body: <p>How can I assign an url to a variable into a template?
  I've tried:</p>
  
  <pre><code>{% with url_news = url 'news'  %}
  </code></pre>
  
  <p>and</p>
  
  <pre><code> {% with url 'news' as url_news %} 
  </code></pre>