happstack-dlg-0.1.2: Cross-request user interactions for Happstack Source code Contents Index

Happstack.Server.Dialogues.Scaffold

Synopsis

escapeHtml :: String -> String scaffold :: (Scaffolded a, Monad m) => String -> a -> Dlg m a class Scaffolded a where render :: String -> a -> String parse :: Monad m => String -> a -> ServerPartT m a data Choice a = Choice [a] Int toChoice :: (Bounded a, Enum a, Eq a) => a -> Choice a fromChoice :: Choice a -> a chooseFrom :: [a] -> Choice a

Documentation

escapeHtml :: String -> String Source

scaffold :: (Scaffolded a, Monad m) => String -> a -> Dlg m a Source

The scaffold function builds a user interaction to display and collect information. In a finished web application, this should generally be replaced with a better mechanism for rendering pages, such as a templating engine, XSLT, or something of the sort.

class Scaffolded a where Source

The Scaffolded type class represents data that can be included in a form. To make it easy to compose several of these in a page, rendering and parsing are parameterized with prefix strings so that they may be made unique across a page. Methods render :: String -> a -> String Source parse :: Monad m => String -> a -> ServerPartT m a Source Instances Scaffolded Bool Scaffolded Int Scaffolded String Scaffolded () Scaffolded ByteString (Eq a, Show a) => Scaffolded (Choice a) (Scaffolded a, Scaffolded b) => Scaffolded (a, b) (Scaffolded a, Scaffolded b, Scaffolded c) => Scaffolded (a, b, c)

data Choice a Source

Wrapper type to present a list of options. Constructors Choice [a] Int Instances Show a => Show (Choice a) (Eq a, Show a) => Scaffolded (Choice a)

toChoice :: (Bounded a, Enum a, Eq a) => a -> Choice a Source

fromChoice :: Choice a -> a Source

chooseFrom :: [a] -> Choice a Source

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