Documentation

RawQueryString gives handler authors a combinator to access the raw (that is, un-parsed) query string from the WAI request, as a ByteString.

Generally speaking, you should prefer to use the QueryString combinator, but if you need access to the raw value, this combinator provides it.

Example:

import Control.Monad.IO.Class (liftIO)
import Servant
import ServantExtras.RawQueryString

import qualified Network.HTTP.Types.Header as NTH (Header)

type MyAPI = "my-query-endpoint"
           :> RawQueryString
           :> Get '[JSON] NoContent

myServer :: Server MyAPI
myServer = queryEndpointHandler
  where
    queryEndpointHandler :: ByteString -> Handler NoContent
    queryEndpointHandler queryStr =
      -- do something with the ByteString, like pass it to a
      -- sub-process