title: How do I pass in the 'id' portion of the URL to a view_callable?
body: <p>I've been playing around with Pyramid lately and, coming from a Pylons background, I've been focusing in URL routing rather than traversal.</p>
  
  <p>I've also been looking at using handlers to group together 'controller' specific functions into the one class. Rather than having view.py polluted with a bunch of functions.</p>
  
  <p>Config:</p>
  
  <pre><code>config.add_handler('view_page', '/page/view/{id}', handler=Page, action=view_page)
  </code></pre>
  
  <p>Handler:</p>
  
  <pre><code>from pyramid.response import Response
  from pyramid.view import action
  
  class Page(object):
  
      def __init__(self, request):
          self.request = request
  
      def view_page(self):
          return {'id': id}
  </code></pre>
  
  <p>I was reading the docs earlier today regarding the implicit declaration of the action in the add_handler() call so that may be wrong... Nevertheless, my main problem is with accessing the <code>id</code> within the view_callable</p>
  
  <p>How do I get 'id'?</p>