| Copyright | (c) Athan Clark 2015 |
|---|---|
| License | BSD-3 |
| Maintainer | athan.clark@gmail.com |
| Stability | experimental |
| Portability | POSIX |
| Safe Haskell | None |
| Language | Haskell2010 |
Network.Wai.Middleware.Verbs
Description
This module provides everything you need to respond depending on an HTTP verbs.
The Combinators section defines the get, post and other functions you would
expect in a toolset like this. The VerbListenerT object is constructed from the
combinators, and turning it directly into a WAI MiddlewareT
is easy with verbsToMiddleware.
myApp :: MonadIO => MiddlewareT m
myApp = verbsToMiddleware $ do
get myMiddleware1
put uploader myMiddleware2
post uploader myMiddleware3
delete myMiddleware4
where
uploader :: MonadIO m => Request -> m ()
uploader req = liftIO $ print =<< getStrictRequestBody req- get :: (Monad m, Monoid r) => r -> VerbListenerT r m ()
- post :: (Monad m, Monoid r) => r -> VerbListenerT r m ()
- put :: (Monad m, Monoid r) => r -> VerbListenerT r m ()
- delete :: (Monad m, Monoid r) => r -> VerbListenerT r m ()
- type VerbMap r = HashMap Verb r
- type Verb = StdMethod
- newtype VerbListenerT r m a = VerbListenerT {
- runVerbListenerT :: StateT (VerbMap r) m a
- execVerbListenerT :: Monad m => VerbListenerT r m a -> m (VerbMap r)
- lookupVerb :: Verb -> VerbMap r -> Maybe r
- getVerb :: Request -> Verb
Combinators
get :: (Monad m, Monoid r) => r -> VerbListenerT r m () #
For simple GET responses
post :: (Monad m, Monoid r) => r -> VerbListenerT r m () #
For simple POST responses
put :: (Monad m, Monoid r) => r -> VerbListenerT r m () #
For simple PUT responses
delete :: (Monad m, Monoid r) => r -> VerbListenerT r m () #
For simple DELETE responses
Types
Monad Transformer
newtype VerbListenerT r m a #
This is the monad for our DSL - where r is the result type. We leave this
polymorphic for ActionT for nested-routes.
myListener :: MonadIO m => VerbListenerT (MiddlewareT m) m ()
myListener = do
get myMiddleware1
post uploader myMiddleware2
where
uploader :: MonadIO Request -> m ()
uploader req =
liftIO $ print =<< strictRequestBody reqConstructors
| VerbListenerT | |
Fields
| |
Instances
| MonadBase b m => MonadBase b (VerbListenerT r m) # | |
| MonadWriter w m => MonadWriter w (VerbListenerT r m) # | |
| MonadReader r m => MonadReader r (VerbListenerT r m) # | |
| MonadError e' m => MonadError e' (VerbListenerT r m) # | |
| MonadTrans (VerbListenerT r) # | |
| Monad m => MonadState (VerbMap r) (VerbListenerT r m) # | |
| Monad m => Monad (VerbListenerT r m) # | |
| Functor m => Functor (VerbListenerT r m) # | |
| MonadFix m => MonadFix (VerbListenerT r m) # | |
| Monad m => Applicative (VerbListenerT r m) # | |
| MonadPlus m => Alternative (VerbListenerT r m) # | |
| MonadPlus m => MonadPlus (VerbListenerT r m) # | |
| MonadIO m => MonadIO (VerbListenerT r m) # | |
| (MonadResource m, MonadBase IO m) => MonadResource (VerbListenerT r m) # | |
| MonadThrow m => MonadThrow (VerbListenerT r m) # | |
| MonadCatch m => MonadCatch (VerbListenerT r m) # | |
| MonadMask m => MonadMask (VerbListenerT r m) # | |
| MonadLogger m => MonadLogger (VerbListenerT r m) # | |
| MonadCont m => MonadCont (VerbListenerT r m) # | |
execVerbListenerT :: Monad m => VerbListenerT r m a -> m (VerbMap r) #
Utilities
lookupVerb :: Verb -> VerbMap r -> Maybe r #
Take the monadic partial result of lookupVerb, and actually h the upload.