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annotate demo/more/bulkEdit.ur @ 1228:7dfa67560916

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Using multiple policies to check a written value
author Adam Chlipala <adamc@hcoop.net>
date Sun, 11 Apr 2010 16:46:38 -0400
parents 1911e84df461
children
rev   line source
adamc@1004 1 open Meta
adamc@1004 2
adamc@1004 3 functor Make(M : sig
adamc@1004 4 con keyName :: Name
adamc@1004 5 con keyType :: Type
adamc@1004 6 val showKey : show keyType
adamc@1005 7 val readKey : read keyType
adamc@1005 8 val injKey : sql_injectable keyType
adamc@1004 9
adamc@1004 10 con visible :: {(Type * Type)}
adamc@1004 11 constraint [keyName] ~ visible
adamc@1004 12 val folder : folder visible
adamc@1004 13 val visible : $(map Meta.meta visible)
adamc@1004 14
adamc@1004 15 con invisible :: {Type}
adamc@1004 16 constraint [keyName] ~ invisible
adamc@1004 17 constraint visible ~ invisible
adamc@1004 18
adamc@1004 19 val title : string
adamc@1004 20 val isAllowed : transaction bool
adamc@1004 21 table t : ([keyName = keyType] ++ map fst visible ++ invisible)
adamc@1004 22 end) = struct
adamc@1004 23
adamc@1004 24 open M
adamc@1004 25
adamc@1004 26 fun main () =
adamc@1004 27 items <- queryX (SELECT t.{keyName}, t.{{map fst visible}} FROM t)
adamc@1004 28 (fn r => <xml><entry><tr>
adamc@1004 29 <hidden{keyName} value={show r.T.keyName}/>
adamc@1008 30 {useMore (allPopulatedTr visible (r.T -- keyName) folder)}
adamc@1004 31 </tr></entry></xml>);
adamc@1004 32
adamc@1004 33 return <xml><body>
adamc@1004 34 <h1>{[title]}</h1>
adamc@1004 35
adamc@1004 36 <form><table>
adamc@1004 37 <tr>{foldRX [meta] [_]
adamc@1004 38 (fn [nm :: Name] [p :: (Type * Type)] [rest :: {(Type * Type)}] [[nm] ~ rest] m =>
adamc@1004 39 <xml><th>{[m.Nam]}</th></xml>) [_] folder visible}</tr>
adamc@1004 40 <subforms{#Users}>{items}</subforms>
adamc@1005 41 <tr> <td><submit value="Save" action={save}/></td> </tr>
adamc@1004 42 </table></form>
adamc@1004 43 </body></xml>
adamc@1004 44
adamc@1005 45 and save r =
adamc@1005 46 List.app (fn user => dml (update [map fst visible] !
adamc@1008 47 (ensql visible (user -- keyName) folder)
adamc@1005 48 t
adamc@1005 49 (WHERE t.{keyName} = {[readError user.keyName]}))) r.Users;
adamc@1005 50 main ()
adamc@1005 51
adamc@1004 52 end