How to reformat URLs to be more restful (from .../?id=123 to .../123)?

Currently I have pages accessed via:

www.foo.com/details.html?id=123

I'd like to make them more restful-like, such as by the following:

www.foo.com/details/123

I'm using Google App Engine. Currently the URL's are mapped in the html-mappings file:

 ('/details.html*', DetailsPage),

And then on the DetailsPage handler, it fetches the ID value via:

class DetailsPage(webapp.RequestHandler):
    def get(self):
        announcement_id = self.request.get("id")

How might I restructure this so that it can map the URL and a extract the ID开发者_开发百科 via the other-formatted URL: www.foo.com/details/123

Thanks

---

Rewrite your URL mapping like this:

('/details/(\d+)', DetailsPage),

(this requires that there be a trailing part of the URL that contains one or more digits and nothing else).

Then modify your DetailsPage::get() method to accept that id parameter, like:

class DetailsPage(webapp.RequestHandler):
    def get(self, announcement_id):
        # next line no longer needed
        # announcement_id = self.request.get("id") 

...and carry on with your code.