Network.Wai.Routing.Predicate.Capture

Predicates against path parameters. When declaring routes, paths may contain "variables" which capture whatever is given at that position by an actual request. For example:

 get "/user/:name/address/:street" handler $
     Capture "name" :&: Capture "street"

extracts from a request path whatever is given for :name and :street.

Documentation

data Capture a

Instances

FromByteString a => Predicate (Capture a) Req

data HasCapture

Instances

Predicate HasCapture Req

capture :: ByteString -> Capture a

hasCapture :: ByteString -> HasCapture