happstack-data-0.2.1: Happstack data manipulation libraries Source code Contents Index

Happstack.Data.Pairs

Synopsis

pairsToXml :: Pairs -> [Element] xmlToPairs :: [Element] -> Pairs pairsToHTMLForm :: String -> String -> String -> Pairs -> [Element] xmlToHTMLForm :: (Xml a, Show a, Data a, Eq a) => String -> String -> String -> a -> [Element] toPairsX :: (Xml a, Show a, Data a, Eq a) => a -> Pairs toHTMLForm :: (Xml a, Show a, Data a, Eq a) => String -> String -> String -> a -> [Element] type Pairs = [(String, String)] class (Xml x, Show x, Data x) => AsPairs x where toPairs :: x -> Pairs fromPairs :: Pairs -> Maybe x

Documentation

pairsToXml :: Pairs -> [Element] Source

Converts lists of string pairs into a list of Elements. The basic structure is pairsToXml [(foo,bar)] = [Elem foo [CData bar]] pairsToXml [(foo/bar,baz)] = [Elem foo [Elem bar [CData baz]]]

xmlToPairs :: [Element] -> Pairs Source

Converts a list of Elements to a list of String pairs. xmlToPairs [CData _] = error xmlToPairs [Elem foo [CData bar]] = [(foo,bar)] xmlToPairs [Elem foo [Elem bar [CData baz]]] = [(foo/bar,baz)] xmlToPairs . pairsToXml = id

pairsToHTMLForm :: String -> String -> String -> Pairs -> [Element] Source

Creates the Xml structure corresponding to the specification of an HTML form. The provided pairs should be the spec of the inputs to the form.

xmlToHTMLForm :: (Xml a, Show a, Data a, Eq a) => String -> String -> String -> a -> [Element] Source

Equivalent to pairsToHTMLForm but first converts the Xml instance to list of pairs.

toPairsX :: (Xml a, Show a, Data a, Eq a) => a -> Pairs Source

toHTMLForm :: (Xml a, Show a, Data a, Eq a) => String -> String -> String -> a -> [Element] Source

Equivalent to pairsToHTMLForm but first converts the Xml instance to list of pairs. An alias for xmlToHTMLForm currently.

type Pairs = [(String, String)] Source

class (Xml x, Show x, Data x) => AsPairs x where Source

Methods toPairs :: x -> Pairs Source fromPairs :: Pairs -> Maybe x Source

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