Ur/Web: demo/crud2.ur annotate

RPC returning an option

author	Adam Chlipala <adamc@hcoop.net>
date	Sun, 08 Mar 2009 13:41:55 -0400
parents	6302b10dbe0e
children	1a317a707d71

rev	line source
adamc@422	1 table t : {Id : int, Nam : string, Ready : bool}
adamc@422	2
adamc@422	3 open Crud.Make(struct
adamc@422	4 val tab = t
adamc@422	5
adamc@422	6 val title = "Are you ready?"
adamc@422	7
adamc@422	8 val cols = {Nam = Crud.string "Name",
adamc@422	9 Ready = {Nam = "Ready",
adamc@422	10 Show = (fn b => if b then
adamc@422	11 <xml>Ready!</xml>
adamc@422	12 else
adamc@422	13 <xml>Not ready</xml>),
adamc@422	14 Widget = (fn (nm :: Name) => <xml>
adamc@422	15 <select{nm}>
adamc@422	16 <option>Ready</option>
adamc@422	17 <option>Not ready</option>
adamc@422	18 </select>
adamc@422	19 </xml>),
adamc@422	20 WidgetPopulated = (fn (nm :: Name) b => <xml>
adamc@422	21 <select{nm}>
adamc@422	22 <option selected={b}>Ready</option>
adamc@422	23 <option selected={not b}>Not ready</option>
adamc@422	24 </select>
adamc@422	25 </xml>),
adamc@422	26 Parse = (fn s =>
adamc@422	27 case s of
adamc@422	28 "Ready" => True
adamc@422	29 \| "Not ready" => False
adamc@422	30 \| _ => error <xml>Invalid ready/not ready</xml>),
adamc@422	31 Inject = _
adamc@422	32 }
adamc@422	33 }
adamc@422	34 end)

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