https://github.com/athanclark/wai-middleware-verbs

Route to different middlewares based on the incoming HTTP verb detected.
https://github.com/athanclark/wai-middleware-verbs

haskell http-verbs wai-middleware

Last synced: 6 days ago
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Route to different middlewares based on the incoming HTTP verb detected.

• Host: GitHub
• URL: https://github.com/athanclark/wai-middleware-verbs
• Owner: athanclark
• License: bsd-3-clause
• Created: 2015-09-22T20:02:36.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-03-22T17:08:50.000Z (almost 7 years ago)
• Last Synced: 2024-04-26T08:04:39.094Z (8 months ago)
• Topics: haskell, http-verbs, wai-middleware
• Language: Haskell
• Size: 28.3 KB
• Stars: 0
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
wai-middleware-verbs

====================

Route to different Wai middleware based on the incoming HTTP verb

detected.

## Usage

This library depends on the [wai-transformers](https://hackage.haskell.org/package/wai-transformers)

package - we expect middleware to already be lifted to `MiddlewareT m`.

As an example, here could be your application:

```haskell

import Network.Wai.Trans

import Network.Wai.Middleware.Verbs

myMid1 :: MiddlewareT (ReaderT Env m)

myMid2 :: Middleware

uploadResponse :: ByteString -> MiddlewareT m

uploadResponse _ = liftMiddleware myMid2

verbRoutes :: VerbListenerT (MiddlewareT m) m ()

verbRoutes = do

  get myMid1

  post uploadResponse

```

Then, to use your newly assembled verb-router, turn the Verbs into a Middleware:

```haskell

verbMid :: MiddlewareT (ReaderT Env m)

verbMid = verbsToMiddleware verbRoutes

```

From there, you can deconstruct your monolithic monad stack back down to `IO`,

and plug-it-in to your existing middleware.