Network.Wai.UrlMap

This module gives you a way to mount applications under sub-URIs. For example:

 bugsApp, helpdeskApp, apiV1, apiV2, mainApp :: Application

 myApp :: Application
 myApp = mapUrls $
       mount "bugs"     bugsApp
   <|> mount "helpdesk" helpdeskApp
   <|> mount "api"
           (   mount "v1" apiV1
           <|> mount "v2" apiV2
           )
   <|> mountRoot mainApp

Documentation

data UrlMap' a

Instances

Functor UrlMap'

Applicative UrlMap'

Alternative UrlMap'

type UrlMap = UrlMap' Application

mount' :: ToApplication a => Path -> a -> UrlMap

Mount an application under a given path. The ToApplication typeclass gives you the option to pass either an Application or an UrlMap as the second argument.

mount :: ToApplication a => Text -> a -> UrlMap

A convenience function like mount', but for mounting things under a single path segment.

mountRoot :: ToApplication a => a -> UrlMap

Mount something at the root. Use this for the last application in the block, to avoid 500 errors from none of the applications matching.

mapUrls :: UrlMap -> Application