title: use slugify in template
body: <p>I want to have <code>SEO-friendly URL</code>,my current url in <code>urls.py</code> :</p>
  
  <pre><code>(ur'^company/news/(?P&lt;news_title&gt;.*)/(?P&lt;news_id&gt;\d+)/$','CompanyHub.views.getNews')
  </code></pre>
  
  <p>I use it in template:</p>
  
  <pre><code>{% for n in news %}
       &lt;a href="{% url CompanyHub.views.getNews n.title,n.pk %}" &gt;{{n.description}}&lt;/a&gt;
  {% endfor %}
  </code></pre>
  
  <p>I use <code>news_id</code> to <code>get</code> news object with that <code>PK</code> .
  I want to convert this url:</p>
  
  <pre><code>../company/news/tile of news,with comma/11
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>../company/news/tile-of-news-with-comma/11
  </code></pre>
  
  <p>by doing some thing like this in template:</p>
  
  <pre><code>{% for n in news %}
        &lt;a href="{% url CompanyHub.views.getNews slugify(n.title),n.pk %}" &gt;{{n.description}}&lt;/a&gt;
  {% endfor %}
  </code></pre>
  
  <p>I checked out these questions:
  <a href="https://stackoverflow.com/questions/1007481/how-do-i-replace-whitespaces-with-underscore-and-vice-versa">question1</a>
  <a href="https://stackoverflow.com/questions/4241757/python-django-how-to-remove-extra-white-spaces-tabs-from-a-string">question2</a>
  <a href="https://stackoverflow.com/questions/1563088/urls-stored-in-database-for-django-site">question3</a> and this <a href="http://www.wellfireinteractive.com/blog/fast-and-beautiful-urls-with-django/" rel="noreferrer">article</a> but they save an <code>slugify field</code> in database while I wanna generate it on demand.in addition I want to run a query by <code>news_id</code>.</p>
  
  <p>I think this <a href="https://stackoverflow.com/questions/1866261/dynamic-seo-friendly-urls">question</a> is good,but I don't know how to use <code>news_id</code> to fetch my <code>news object</code></p>