thanks very much for your reply.
what is $F? I should point out that I am not using this within Rails.
I was directed here by someone at the javascript group.
your code gives me the following error:
Error: missing } after property list
Source File: xxxxxxx
Line: 33, Column: 32
Source Code:
"get", parameters: chosen_option: $F("element_id") });
thanks,
lukemack.
On 5 Mar, 14:48, David Dashifen Kees <[EMAIL PROTECTED]> wrote:
> You should be able to use an onChange event on the first select box to
> create an Ajax.Updater object with a parameter equaling the value of the
> select box. Essentially:
>
> <select id="choose_first" onChange="get_second_list()">
> <option>....</option>
> </select>
>
> <div id="second_list"></div>
>
> <script type="text/javascript">
> function get_second_list() {
> new Ajax.Updater("second_list", "get_second_list.php", { method:
> "get", parameters: chosen_option: $F("choose_first") });
> }
> </script>
>
> Your preference for unobtrusive Event.observe() calls versus inline
> event handlers may alter the code and there may be better ways to do
> this rather than using the empty div, but this should illustrate the
> basics. The get_second_list.php page would have to get the value out of
> the $_GET array, process it, and construct the neccessary select box
> which would be placed in the "second_list" div.
>
> Write back if you're still confused.
>
> -- Dash --
>
> 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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