title: How to force symfony route to have xml extension?
body: <p>Our client is using <strong>Symfony 1.2</strong> in his website. He requested to create XML RSS Feeds page for his blog post. I did created the RSS feeds but the problem is with the route! I want the route to be <strong>rss.xml</strong> but now the route is /rss only. How can i force it to load the feeds on <strong>/rss.xml</strong> route i.e with xml extension</p>
  
  <p><strong>Routing</strong>:</p>
  
  <pre><code>blog_rss:
    url:   /rss
    param: {module: blog, action: rss, sf_format: xml}
  </code></pre>
  
  <p>I also created an action</p>
  
  <pre><code> public function executeRss(sfWebRequest $request) { }
  </code></pre>
  
  <p>And template</p>
  
  <pre><code>templates\rssSuccess.xml.php
  </code></pre>