title: Change variables beetween urls and view
body: <p>Is this possible to change variable after it's been catched by url dispatcher and pass it to view changed?</p>
  
  <p>For example:
  I've got following urlpattern</p>
  
  <pre><code>urlpatterns = patterns('',
      (r'^articles/(?P&lt;article_id&gt;\d+)/$', 'article.views.article_view'),
  )
  </code></pre>
  
  <p>I want to change <code>article_id</code> before passing it to <code>article.views.article_view</code></p>
  
  <p>I need this, as an override. I've got <code>article</code> app which can't be changed, but I must use it. :-/</p>