Text.Digestive.Forms.Happstack

Module providing a happstack backend for the digestive-functors library

Documentation

type HappstackForm m e v a = Form m [Input] e v a

Simplification of the Form type, instantiated to Happstack

happstackEnvironment :: (HasRqData m, MonadPlus m, Alternative m) => Environment m [Input]

Environment that will fetch input from the parameters parsed by Happstack

eitherHappstackForm

Arguments

:: (HasRqData m, MonadPlus m, Alternative m, ServerMonad m)

=> HappstackForm m e v a

Form

-> String

Form name

-> m (Either v a)

Result

Run a happstack 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