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annotate tests/crud.ur @ 339:075b36dbb1a4

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Crud supports INSERT
author Adam Chlipala <adamc@hcoop.net>
date Sun, 14 Sep 2008 15:10:04 -0400
parents 18d5affa790d
children 389399d65331
rev   line source
adamc@339 1 con colMeta = fn t_formT :: (Type * Type) => {
adamc@339 2 Nam : string,
adamc@339 3 Show : t_formT.1 -> xbody,
adamc@339 4 Widget : nm :: Name -> xml form [] [nm = t_formT.2],
adamc@339 5 Parse : t_formT.2 -> t_formT.1,
adamc@339 6 Inject : sql_injectable t_formT.1
adamc@339 7 }
adamc@339 8 con colsMeta = fn cols :: {(Type * Type)} => $(Top.mapT2T colMeta cols)
adamc@326 9
adamc@325 10 functor Make(M : sig
adamc@339 11 con cols :: {(Type * Type)}
adamc@325 12 constraint [Id] ~ cols
adamc@339 13 val tab : sql_table ([Id = int] ++ mapT2T fstTT cols)
adamc@325 14
adamc@325 15 val title : string
adamc@325 16
adamc@339 17 val cols : colsMeta cols
adamc@325 18 end) = struct
adamc@325 19
adamc@325 20 open constraints M
adamc@325 21 val tab = M.tab
adamc@325 22
adamc@339 23 sequence seq
adamc@339 24
adamc@339 25 fun create (inputs : $(mapT2T sndTT M.cols)) =
adamc@339 26 id <- nextval seq;
adamc@339 27 () <- dml (insert tab (foldT2R2 [sndTT] [colMeta]
adamc@339 28 [fn cols => $(mapT2T (fn t :: (Type * Type) =>
adamc@339 29 sql_exp [T = [Id = int] ++ mapT2T fstTT M.cols] [] [] t.1) cols)]
adamc@339 30 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339 31 [[nm] ~ rest] =>
adamc@339 32 fn input col acc => acc with nm = sql_inject col.Inject (col.Parse input))
adamc@339 33 {} [M.cols] inputs M.cols
adamc@339 34 with #Id = (SQL {id})));
adamc@339 35 return <html><body>
adamc@339 36 Inserted with ID {txt _ id}.
adamc@339 37 </body></html>
adamc@339 38
adamc@337 39 fun delete (id : int) =
adamc@337 40 () <- dml (DELETE FROM tab WHERE Id = {id});
adamc@337 41 return <html><body>
adamc@337 42 The deed is done.
adamc@337 43 </body></html>
adamc@337 44
adamc@337 45 fun confirm (id : int) = return <html><body>
adamc@337 46 <p>Are you sure you want to delete ID #{txt _ id}?</p>
adamc@337 47
adamc@337 48 <p><a link={delete id}>I was born sure!</a></p>
adamc@337 49 </body></html>
adamc@337 50
adamc@334 51 fun main () : transaction page =
adamc@334 52 rows <- queryX (SELECT * FROM tab AS T)
adamc@339 53 (fn (fs : {T : $([Id = int] ++ mapT2T fstTT M.cols)}) => <body>
adamc@326 54 <tr>
adamc@326 55 <td>{txt _ fs.T.Id}</td>
adamc@339 56 {foldT2RX2 [fstTT] [colMeta] [tr]
adamc@339 57 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@326 58 [[nm] ~ rest] =>
adamc@336 59 fn v col => <tr>
adamc@336 60 <td>{col.Show v}</td>
adamc@326 61 </tr>)
adamc@326 62 [M.cols] (fs.T -- #Id) M.cols}
adamc@337 63 <td><a link={confirm fs.T.Id}>[Delete]</a></td>
adamc@326 64 </tr>
adamc@334 65 </body>);
adamc@325 66 return <html><head>
adamc@334 67 <title>{cdata M.title}</title>
adamc@325 68
adamc@325 69 </head><body>
adamc@325 70
adamc@334 71 <h1>{cdata M.title}</h1>
adamc@325 72
adamc@325 73 <table border={1}>
adamc@336 74 <tr>
adamc@336 75 <th>ID</th>
adamc@339 76 {foldT2RX [colMeta] [tr]
adamc@339 77 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@336 78 [[nm] ~ rest] =>
adamc@336 79 fn col => <tr>
adamc@336 80 <th>{cdata col.Nam}</th>
adamc@336 81 </tr>)
adamc@336 82 [M.cols] M.cols}
adamc@336 83 </tr>
adamc@325 84 {rows}
adamc@325 85 </table>
adamc@339 86
adamc@339 87 <br/>
adamc@339 88
adamc@339 89 <lform>
adamc@339 90 {foldT2R [colMeta] [fn cols :: {(Type * Type)} => xml form [] (mapT2T sndTT cols)]
adamc@339 91 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339 92 [[nm] ~ rest] =>
adamc@339 93 fn (col : colMeta t) (acc : xml form [] (mapT2T sndTT rest)) => <lform>
adamc@339 94 <li> {cdata col.Nam}: {col.Widget [nm]}</li>
adamc@339 95 {useMore acc}
adamc@339 96 </lform>)
adamc@339 97 <lform></lform>
adamc@339 98 [M.cols] M.cols}
adamc@339 99
adamc@339 100 <submit action={create}/>
adamc@339 101 </lform>
adamc@325 102 </body></html>
adamc@325 103
adamc@325 104 end