At 10:46 29/07/99 , Paul Chung Chee Soong wrote:
As usual, I'm beeen using Zope-1.10.3-src, Zap-1.10, RedHat 5.2 and lately ZPyGresql Database Adaptor. I wonder whether we can dymanicaly construct an SQL statement. Below is the following situation:
DTML Method 1 :- ============ Contain 3 same combo box as the first, second and third sort key. Each combo box contains 3 sort keys, Aeg. A, B, C. User will choose the combination of keys they want and submit the page..
DTML Method 2 : ============ Display the information as the sorted manner defined in the earlier page.
So how do you guys think? Can Z SQL Method do that? The followings are the possible key combinations: ABC ACB BAC BCA CAB CBA AB AC BA BC CA CB A B C
Do we need to BUILD 15 Z SQL Method?? If not, what is the proper way?
Just make one and use DTML constructs to set up the sorting. Name the three comboboxes 'sorting:list' (yes, all three of them). You might need some Javascript or DTML to make sure the user doesn't select A twice, or something like that. Your ZSQL should do something like this: from mytable select * <!--#in sorting--> <!--#if sequence-start-->order by<!--#/if--> <!--#var sequence-item--><!--#unless sequence-end-->,<!--#/unless--> <!--#/in--> This will cause the select tag to have up to three 'order by' columns specified, or no order by clause at all if 'sorting' is a non-existing or empty list. Watch it: this is untested, YMMV. -- Martijn Pieters, Web Developer | Antraciet http://www.antraciet.nl | Tel: +31-35-7502100 Fax: +31-35-7502111 | mailto:mj@antraciet.nl http://www.antraciet.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------