Tornado URL query parameters

There is a better way for GET requests. There is a demo in the tornado source on github here

# url handler
handlers = [(r"/entry/([^/]+)", EntryHandler),]

class EntryHandler(BaseHandler):
    def get(self, slug):
        entry = self.db.get("SELECT * FROM entries WHERE slug = %s", slug)
        if not entry: raise tornado.web.HTTPError(404)
        self.render("entry.html", entry=entry)

Any “text” that matches the regular expression will be passed to the EntryHandler’s get method as slug argument. If the url doesn’t match any handler, the user will receive a 404 error.

If you wanted to provide another fallback, you could make the parameter optional

(r"/entry/([^/]*)", EntryHandler),

class EntryHandler(BaseHandler):
    def get(self, slug=None):
        pass

Update:

+1 for the link. However does this URL pattern extend to include more parameters if I wanted to search like this…
/recipes?ingredient=chicken&style=indian – colinjameswebb

Yes it does.

handlers = [
     (r'/(\d{4})/(\d{2})/(\d{2})/([a-zA-Z\-0-9\.:,_]+)/?', DetailHandler)
]

class DetailHandler(BaseHandler):
    def get(self, year, month, day, slug):
        pass