annotate tests/crud.ur @ 341:389399d65331

Crud update form
author Adam Chlipala <adamc@hcoop.net>
date Sun, 14 Sep 2008 19:03:55 -0400
parents 075b36dbb1a4
children f55034419a07
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@341 5 WidgetPopulated : nm :: Name -> t_formT.1 -> xml form [] [nm = t_formT.2],
adamc@339 6 Parse : t_formT.2 -> t_formT.1,
adamc@339 7 Inject : sql_injectable t_formT.1
adamc@339 8 }
adamc@339 9 con colsMeta = fn cols :: {(Type * Type)} => $(Top.mapT2T colMeta cols)
adamc@326 10
adamc@325 11 functor Make(M : sig
adamc@339 12 con cols :: {(Type * Type)}
adamc@325 13 constraint [Id] ~ cols
adamc@339 14 val tab : sql_table ([Id = int] ++ mapT2T fstTT cols)
adamc@325 15
adamc@325 16 val title : string
adamc@325 17
adamc@339 18 val cols : colsMeta cols
adamc@325 19 end) = struct
adamc@325 20
adamc@325 21 open constraints M
adamc@325 22 val tab = M.tab
adamc@325 23
adamc@339 24 sequence seq
adamc@339 25
adamc@339 26 fun create (inputs : $(mapT2T sndTT M.cols)) =
adamc@339 27 id <- nextval seq;
adamc@339 28 () <- dml (insert tab (foldT2R2 [sndTT] [colMeta]
adamc@339 29 [fn cols => $(mapT2T (fn t :: (Type * Type) =>
adamc@339 30 sql_exp [T = [Id = int] ++ mapT2T fstTT M.cols] [] [] t.1) cols)]
adamc@339 31 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339 32 [[nm] ~ rest] =>
adamc@339 33 fn input col acc => acc with nm = sql_inject col.Inject (col.Parse input))
adamc@339 34 {} [M.cols] inputs M.cols
adamc@339 35 with #Id = (SQL {id})));
adamc@339 36 return <html><body>
adamc@339 37 Inserted with ID {txt _ id}.
adamc@339 38 </body></html>
adamc@339 39
adamc@341 40 fun save (id : int) _ =
adamc@341 41 return <html><body>
adamc@341 42 Under Construction
adamc@341 43 </body></html>
adamc@341 44
adamc@341 45 fun update (id : int) =
adamc@341 46 fso <- oneOrNoRows (SELECT tab.{{mapT2T fstTT M.cols}} FROM tab WHERE tab.Id = {id});
adamc@341 47 case fso : (Basis.option {Tab : $(mapT2T fstTT M.cols)}) of
adamc@341 48 None => return <html><body>Not found!</body></html>
adamc@341 49 | Some fs => return <html><body><lform>
adamc@341 50 {foldT2R2 [fstTT] [colMeta] [fn cols :: {(Type * Type)} => xml form [] (mapT2T sndTT cols)]
adamc@341 51 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@341 52 [[nm] ~ rest] =>
adamc@341 53 fn (v : t.1) (col : colMeta t) (acc : xml form [] (mapT2T sndTT rest)) => <lform>
adamc@341 54 <li> {cdata col.Nam}: {col.WidgetPopulated [nm] v}</li>
adamc@341 55 {useMore acc}
adamc@341 56 </lform>)
adamc@341 57 <lform></lform>
adamc@341 58 [M.cols] fs.Tab M.cols}
adamc@341 59
adamc@341 60 <submit action={save id}/>
adamc@341 61 </lform></body></html>
adamc@341 62
adamc@337 63 fun delete (id : int) =
adamc@337 64 () <- dml (DELETE FROM tab WHERE Id = {id});
adamc@337 65 return <html><body>
adamc@337 66 The deed is done.
adamc@337 67 </body></html>
adamc@337 68
adamc@337 69 fun confirm (id : int) = return <html><body>
adamc@337 70 <p>Are you sure you want to delete ID #{txt _ id}?</p>
adamc@337 71
adamc@337 72 <p><a link={delete id}>I was born sure!</a></p>
adamc@337 73 </body></html>
adamc@337 74
adamc@334 75 fun main () : transaction page =
adamc@334 76 rows <- queryX (SELECT * FROM tab AS T)
adamc@339 77 (fn (fs : {T : $([Id = int] ++ mapT2T fstTT M.cols)}) => <body>
adamc@326 78 <tr>
adamc@326 79 <td>{txt _ fs.T.Id}</td>
adamc@339 80 {foldT2RX2 [fstTT] [colMeta] [tr]
adamc@339 81 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@326 82 [[nm] ~ rest] =>
adamc@336 83 fn v col => <tr>
adamc@336 84 <td>{col.Show v}</td>
adamc@326 85 </tr>)
adamc@326 86 [M.cols] (fs.T -- #Id) M.cols}
adamc@341 87 <td><a link={update fs.T.Id}>[Update]</a> <a link={confirm fs.T.Id}>[Delete]</a></td>
adamc@326 88 </tr>
adamc@334 89 </body>);
adamc@325 90 return <html><head>
adamc@334 91 <title>{cdata M.title}</title>
adamc@325 92
adamc@325 93 </head><body>
adamc@325 94
adamc@334 95 <h1>{cdata M.title}</h1>
adamc@325 96
adamc@325 97 <table border={1}>
adamc@336 98 <tr>
adamc@336 99 <th>ID</th>
adamc@339 100 {foldT2RX [colMeta] [tr]
adamc@339 101 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@336 102 [[nm] ~ rest] =>
adamc@336 103 fn col => <tr>
adamc@336 104 <th>{cdata col.Nam}</th>
adamc@336 105 </tr>)
adamc@336 106 [M.cols] M.cols}
adamc@336 107 </tr>
adamc@325 108 {rows}
adamc@325 109 </table>
adamc@339 110
adamc@339 111 <br/>
adamc@339 112
adamc@339 113 <lform>
adamc@339 114 {foldT2R [colMeta] [fn cols :: {(Type * Type)} => xml form [] (mapT2T sndTT cols)]
adamc@339 115 (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) =>
adamc@339 116 [[nm] ~ rest] =>
adamc@339 117 fn (col : colMeta t) (acc : xml form [] (mapT2T sndTT rest)) => <lform>
adamc@339 118 <li> {cdata col.Nam}: {col.Widget [nm]}</li>
adamc@339 119 {useMore acc}
adamc@339 120 </lform>)
adamc@339 121 <lform></lform>
adamc@339 122 [M.cols] M.cols}
adamc@339 123
adamc@339 124 <submit action={create}/>
adamc@339 125 </lform>
adamc@325 126 </body></html>
adamc@325 127
adamc@325 128 end