I believe this is exactly what you need:
http://colin.mollenhour.com/doublecombo/index.html
Colin
lukemack wrote:
> hi,
>
> i am trying to make the contents of one drop-down box dependent on the
> contents of another using AJAX (prototype.js) and PHP
>
> I have it working so that a new dropdown appears when i select a value
> in the first dropdown:
>
> <?php echo $html->selectTag('Review/cruiseline', $cruise_lines, null,
> array('onchange'=>'new Ajax.Updater(\'test\', \'ships?variable=12\',
> { method: \'get\' }, {asynchronous:true, evalScripts:true});'), null,
> true, false);?>
>
> In my php script (which is located at URL 'ships'), I am just getting
> the value of 'variable' from the $_GET super global but I obviously
> want that value to be dynamic and equal to the value selected in the
> dropdown.
>
> So the missing piece is passing the selected dropdown value from
> HTML / Javascript to PHP. Anyone know how to do that?
>
> thanks,
>
> lukemack.
>
>
> >
>
>
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