disco! you the man. thanks loads for your help. can you explain what
the curly braces do?
On 5 Mar, 16:12, David Dashifen Kees <[EMAIL PROTECTED]> wrote:
> My bad. Put curly braces ({ and }) around the parameters like this:
>
> { chosen_option: $F("choose_first") } and you should be good to go.
>
> Or, if you prefer, you can use the following syntax because it looks
> more like a url:
>
> parameters: "chosen_option="+$F("choose_first")
>
> It's up to you.
>
> -- Dash --
>
> > I got a bit further. I understand the $F bit now. However, I'm only
> > getting the following in my $_GET array in PHP:
>
> > Array
> > (
> > [url] => tests/ships
> > [13] =>
> > )
>
> > so the array's key has become the value I want. how can i get this in
> > the same form as the url value?
>
> > On 5 Mar, 15:38, "lukemack" <[EMAIL PROTECTED]> wrote:
>
> >> 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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