Introducing vibe.d!

[Sönke Ludwig]

Am 27.04.2012 11:57, schrieb David:
> I am not sure if you're aware of Flask, Flask is a microframework for
> Python.
>
> It provides something called "Blueprints", you can register e.g.
> "routes" to this Blueprint and to use them you've to add them to the
> main application. This makes code way more readable!
> Also some kind of after_request and before_request handlers would be
> great, you could use them e.g. fetching a user from the database and
> providing it to the handler (over a thread-local?).

I didn't know flask before and the website seems to be down currently ;)

But is the UrlRouter (see http://vibed.org/docs#http-routing and 
http://vibed.org/api/vibe.http.router#UrlRouter) something equivalent?

It allows you to specify multiple patterns that are matched in sequence 
until a request handler writes a response:

auto r = new UrlRouter;
r.any("*", &performAuth);
r.get("/", &renderHomePage);
listenHttp(settings, r);

This would first always match performAuth, which could check the user 
credentials and write out a message if the user is not authenticated. 
Otherwise it just does nothing and the router will continue to the next 
match, which is renderHomePage() in this case for "GET /".

Whats not directly possible in the router is something like 
after_request. But you can do it easily by wrapping the call:

auto r = new UrlRouter;
//...
listenHttp(settings, (req, res){
	before_request(req, res);
	r.handleRequest(req, res);
	after_request(req, res);
});