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comparison demo/tree.ur @ 471:20fab0e96217

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Tree demo working (and other assorted regressions fixed)
author Adam Chlipala <adamc@hcoop.net>
date Thu, 06 Nov 2008 19:43:48 -0500
parents b393c2fc80f8
children 1a317a707d71
comparison
equal deleted inserted replaced
470:7cb418e9714f 471:20fab0e96217
1 sequence s
1 table t : { Id : int, Parent : option int, Nam : string } 2 table t : { Id : int, Parent : option int, Nam : string }
2 3
3 open TreeFun.Make(struct 4 open TreeFun.Make(struct
4 val tab = t 5 val tab = t
5 end) 6 end)
6 7
7 fun row r = <xml> 8 fun row r = <xml>
8 #{[r.Id]}: {[r.Nam]} 9 #{[r.Id]}: {[r.Nam]} <a link={del r.Id}>[Delete]</a>
10
11 <form>
12 Add child: <textbox{#Nam}/> <submit action={add (Some r.Id)}/>
13 </form>
9 </xml> 14 </xml>
10 15
11 fun main () = 16 and main () =
12 xml <- tree row None; 17 xml <- tree row None;
13 return <xml><body> 18 return <xml><body>
14 {xml} 19 {xml}
20
21 <form>
22 Add a top-level node: <textbox{#Nam}/> <submit action={add None}/>
23 </form>
15 </body></xml> 24 </body></xml>
25
26 and add parent r =
27 id <- nextval s;
28 dml (INSERT INTO t (Id, Parent, Nam) VALUES ({[id]}, {[parent]}, {[r.Nam]}));
29 main ()
30
31 and del id =
32 dml (DELETE FROM t WHERE Id = {[id]});
33 main ()