digestive-functors-snap (empty) → 0.0.2.0

raw patch · 4 files changed

+109/−0 lines, 4 filesdep +basedep +bytestringdep +digestive-functorssetup-changed

Dependencies added: base, bytestring, digestive-functors, snap-core, utf8-string

Files

• LICENSE +31/−0
• Setup.hs +2/−0
• digestive-functors-snap.cabal +23/−0
• src/Text/Digestive/Forms/Snap.hs +53/−0

@@ -0,0 +1,31 @@+Copyright (c) 2010, Jasper Van der Jeugt+ +All rights reserved.+ +Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are+met:+ +    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.+ +    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.+ +    * Neither the name of Jasper Van der Jeugt nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.+ +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,23 @@+Name:                digestive-functors-snap+Version:             0.0.2.0+Synopsis:            Snap backend for the digestive-functors library+Description:         This is a snap backend for the digestive-functors library.++Homepage:            http://github.com/jaspervdj/digestive-functors+License:             BSD3+License-file:        LICENSE+Author:              Jasper Van der Jeugt+Maintainer:          jaspervdj@gmail.com+Category:            Web+Build-type:          Simple+Cabal-version:       >=1.6+++Library+  Hs-source-dirs:    src+  Exposed-modules:   Text.Digestive.Forms.Snap+  Build-depends:     base >= 4 && < 5,+                     digestive-functors == 0.0.2.*,+                     snap-core >= 0.2 && < 0.3,+                     bytestring >= 0.9,+                     utf8-string >= 0.3

@@ -0,0 +1,53 @@+-- | Module providing a snap backend for the digestive-functors library+--+{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}+module Text.Digestive.Forms.Snap+    ( SnapInput+    , SnapForm+    , snapEnvironment+    , eitherSnapForm+    ) where++import Control.Applicative ((<$>))+import Control.Monad (liftM)++import Data.ByteString as SB+import Data.ByteString.UTF8 as SB (toString, fromString)+import Snap.Types++import Text.Digestive.Forms (FormInput (..))+import Text.Digestive.Types (Form (..), Environment (..), viewForm, eitherForm)++newtype SnapInput = SnapInput {unSnapInput :: SB.ByteString}++instance FormInput SnapInput () where+    getInputString = Just . SB.toString . unSnapInput+    getInputFile = const Nothing++-- | Simplification of the `Form` type, instantiated to Snap+--+type SnapForm e v a = Form Snap SnapInput e v a++-- | Environment that will fetch input from the parameters parsed by Snap+--+snapEnvironment :: Environment Snap SnapInput+snapEnvironment = Environment $ \id' -> do+    input' <- getParam (SB.fromString $ show id')+    return $ SnapInput <$> input'++-- | Run a snap form+--+-- * When we are responding to a GET request, you will simply receive the form+--   as a view+--+-- * When we are responding to another request method, the form data will be+--   used. When errors occur, you will receive the form as a view, otherwise,+--   you will get the actual result+--+eitherSnapForm :: SnapForm e v a     -- ^ Form+               -> String             -- ^ Form name+               -> Snap (Either v a)  -- ^ Result+eitherSnapForm form name = do+    method' <- rqMethod <$> getRequest+    case method' of GET -> liftM Left $ viewForm form name+                    _   -> eitherForm form name snapEnvironment