Rails - Feb 2006 - Dynamic url with javascript? - Help Please

Hi,

I''m trying to call a remote function when a combobox option is
selected,
passing as an argument the current value of the combobox (paramenter 
"panel_id":

<select id="server_interface_jack_switch_panel" 
onchange="<%=remote_function(:update=>''server_interface_jack_switch_id'',:url=>{:action=>''update_jack_option'',
:panel_id=>''1'' })%>">


As you can see in this example, the :panel_id value is hardcoded..... 
?How can I get the value of the combobox dynamically??? I''ve tried by 
replacing the hardcoded value with javascript, but it''s being passed as
a string to the controller, so the paramenter doesn''t work.

Help Please.

Thanks everybody.

Try using observe_field()... there are a couple good posts about this.

http://www.adamhegedus.com/articles/2006/01/19/ajaxed-select-boxes-in-rails
http://www.roryhansen.ca/?p=9

Jason Cartwright wrote:
> Try using observe_field()... there are a couple good posts about this.
> 
> http://www.adamhegedus.com/articles/2006/01/19/ajaxed-select-boxes-in-rails
> http://www.roryhansen.ca/?p=9
Thanks a lot for your help!

That''s what I was looking for.

Matias Surdi wrote:
> Jason Cartwright wrote:
>> Try using observe_field()... there are a couple good posts about this.
>> 
>>
http://www.adamhegedus.com/articles/2006/01/19/ajaxed-select-boxes-in-rails
>> http://www.roryhansen.ca/?p=9
> 
> Thanks a lot for your help!
> 
> That''s what I was looking for.
Eh, you can do it without observe_field.  I prefer not to since there is 
a slight delay and the extra messiness to deal with.  Try this..

<select id="server_interface_jack_switch_panel"
onchange="<%=remote_function(:update=>''server_interface_jack_switch_id'',:url=>{:action=>''update_jack_option''},
:with => "''panel_id=''+value")%>">


-- 
Posted via http://www.ruby-forum.com/.

Kevin Olbrich wrote:
> Matias Surdi wrote:
>> Jason Cartwright wrote:
>>> Try using observe_field()... there are a couple good posts about
this.
>>>
>>>
http://www.adamhegedus.com/articles/2006/01/19/ajaxed-select-boxes-in-rails
>>> http://www.roryhansen.ca/?p=9
>> Thanks a lot for your help!
>>
>> That''s what I was looking for.
> 
> Eh, you can do it without observe_field.  I prefer not to since there is 
> a slight delay and the extra messiness to deal with.  Try this..
> 
> <select id="server_interface_jack_switch_panel"
>
onchange="<%=remote_function(:update=>''server_interface_jack_switch_id'',:url=>{:action=>''update_jack_option''},
> :with => "''panel_id=''+value")%>">
> 
> 

mmm.... i didn''t realise that the :with parameter could be used with 
remote_function..... cool...

anyway, if you omit the :frequency parameter in observe_field (that''s 
what I''m doing) the function fires with the "onchange" event,
so, no
delay exists......


Thanks,