Because "selected" is one of those special attributes in php you can
also just use:
<option tal:repeat="item items" tal:attributes="selected item/active" />
If I'm not mistaken, a boolean value for "active" should work the way
you want it.
On 4/28/09, Julian Haupt <julian.ha...@hauptmedia.de> wrote:
> Hi,
>
>> The way you USA should work, but try this:
>>
>> <tal:block tal:repeat="c categories">
>> <option tal:attributes="value c/id;selected php: f.categoryid ==
>> c.id" tal:content="c/category"></option>
>> </tal:block>
>
> In general it might be a bad idea to use php code and explicit
> comparisons in the templates. This is a bad practice which entangles the
> view with the underlying business logic.
>
> I've added a new TALES-Keyword for this purpose: condition
>
> It works like mysql's IF statement. If the expression in the first block
> is true, execute the next block, otherwise the last block.
>
> function phptal_tales_condition($expression, $nothrow) {
> // split OR expressions
> $exps = preg_split('/\s*\|\s*/sm', $expression);
>
> if (!isset($exps[1])) {
> $exps[1] = 'nothing';
> }
>
> if (!isset($exps[2])) {
> $exps[2] = 'nothing';
> }
>
> return '(' . phptal_tales($exps[0], $nothrow) . ') ? ' .
> phptal_tales($exps[1], $nothrow) . ' : '. phptal_tales($exps[2],
> $nothrow);
> }
>
>
> It might not be perfect, because it uses TALES' "|" operator for a
> completely different operation.
>
> Please note: as you cannot do explicit comparisons with this keyword,
> you must define the result of the comparison in your model.
>
> With the help of the condition keyword you can write the above template
> like this:
>
> <tal:block tal:repeat="c categories">
> <option tal:attributes="value c/id; selected condition: c.active|
> string:selected|not:true" tal:content="c/category"></option>
> </tal:block>
>
> The "active" property might be determined like this:
>
> $id = (int)$_REQUEST["id"]; // get the id in the url query
>
> $formSQL = "SELECT i.id, categoryid, category, title, publication,
> DATE_FORMAT(date, '%Y/%m/%d') AS fDate, author, summary, filename,
> IF(i.id=$id,1,NULL) AS active FROM `resources-items` AS i LEFT JOIN
> `resources-categories` AS c ON i.categoryid=c.id WHERE i.id=$id"; // get
> the row to be edited
>
> $t = new PHPTAL("test.html");
> $t->categories = getRows("SELECT id, category FROM
> `resources-categories` ORDER BY category"); // get all categories
> $t->form = getRows($formSQL);
>
>
> Greetings,
>
> Julian Haupt
>
>
>
> --
> Julian Haupt B.Sc.
>
> Hauptmedia
> Landgraf-Georg-Str. 25
> 64283 Darmstadt
>
> fon: +49 6151 - 278 041 7
> fax: +49 6151 - 278 041 8
> mobil: +49 179 - 901 548 7
> email: julian.ha...@hauptmedia.de
> web: www.hauptmedia.de
>
> St.-Nr. 007/825/32605
>
>
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>
--
--
Tjerk
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