Display a random image with vibe.d

[vnr]

On Sunday, 20 June 2021 at 14:28:26 UTC, jfondren wrote:
> On Sunday, 20 June 2021 at 13:58:22 UTC, vnr wrote:
>>
>> Thanks for the answers, I understand better what is going on.
>>
>> So, what should I do to make my server respond with a random 
>> image, and not the random image page? I'm fairly new to 
>> vibe.d, so I don't yet know the intricacies of how to handle 
>> this style of thing and I couldn't find how to do it in the 
>> documentation.
>>
>> Thank you.
>
> Responding with a random image is an option, but what you have 
> is
> a good start, you just need to also serve images on request.
>
> I'm very distracted right now or I would've included more in my
> earlier post, but Vibe's online documentation has what you need.
>
> Try, especially, https://vibed.org/docs#http-routing
>
> You want a route for the random-image page, and you want to 
> serve
> static files under images/

Great, thanks a lot, it works as expected! Here is the code used 
(app.d), for those who are interested:

```
import vibe.vibe;

void main()
{

     	auto router = new URLRouter;
     	router.get("/", &index);
     	router.get("*", serveStaticFiles("public"));

     	auto settings = new HTTPServerSettings;
     	settings.bindAddresses = ["::1", "127.0.0.1"];
     	settings.port = 8080;

     	auto listener = listenHTTP(settings, router);
     	scope (exit) listener.stopListening();

     	logInfo("Please open http://127.0.0.1:8080/ in your 
browser.");
     	runApplication();
     }

     /// The index page
     void index(HTTPServerRequest req, HTTPServerResponse res)
     {
     	import std.random;
     	import std.format;

     	auto rnd = Random(unpredictableSeed);
     	const auto rndimg = format("/images/rndimg/img%d.jpg", 
uniform(1, 27, rnd));

     	res.render!("index.dt", req, rndimg);
     }
     ```