Readme for wai-routing-0.2
wai-routing enables the declaration of "routes" which handle requests to a specific URL.
The set of possible handlers can be restricted by "predicates", which operate on WAI requests and have to be true or else the handler will not be called.
For details have a look at the haddock documentation of
Network.Wai.Routing.Tutorial
or the examples
folder in the
source distribution.
This library is a port of snap-predicates
which provides
similar functionality for the snap framework.
The routing tree construction is implemented using wai-route
.
Here is a simple usage example.
import Data.ByteString (ByteString)
import Data.Text (Text)
import Network.Wai
import Network.Wai.Routing
import Network.Wai.Handler.Warp
main :: IO ()
main = run 8080 (route (prepare start))
start :: Monad m => Routes a m ()
start = do
get "/user/:name" fetchUser $
capture "name"
get "/user/find" findUser $
query "byName" :||: query "byId"
delete "/user/:name" rmUser $
capture "name" :&: opt (cookie "foo")
fetchUser :: Monad m => Text -> m Response
fetchUser name = ...
findUser :: Monad m => Either ByteString Word64 -> m Response
findUser (Left name) = ...
findUser (Right ident) = ...
rmUser :: Monad m => Text ::: Maybe Int -> m Response
rmUser (name ::: foo) = ...