Rest example about wai-route HOT 2 CLOSED

Hello,

I assume you've already seen the small sample. This library itself only does routing based on paths, with optional variable capture, which is usually the very first step in routing requests to handlers. Once a handler has been chosen based on the request path, you can perform additional routing / branching based on inspecting the request further. For example, to branch based on the request method, you can simply inspect the Request passed to your handler function, e.g. extending the sample code:

bazHandler p rq k = case parseMethod (requestMethod rq) of
    Right GET -> k $ responseLBS status200 []
                   $ maybe L.empty L.fromStrict (lookup "baz" p)
    _ -> k $ responseLBS status405 [] L.empty

If your needs are basic, this approach can be sufficient. If you are interested in libraries that come with a lot more batteries included, you may be interested in one of scotty, wai-routing (which is built on top of this library) or servant but beware that the latter two employ some advanced features of Haskell's type system and may thus have a steep learning curve if you're just starting out.

from wai-route.

Thank you @romanb for your advice. I'll investigate wai-routing/Scotty

from wai-route.