Rails - Aug 2005 - Using AJAX with select fields

I''m trying to use rails built in AJAX support in my application, it  
works fine while using it on a text field, but fails when trying to  
use it on a select field.

When the select box is changed I want it update a div in my form. Is  
there a way to do this using built in rails helpers and how do i do  
this with select boxes.

Thanks in advance.

Here''s an example:

On the original form you''d have something like:

<div id="makes">
<%= select("search", "make",
	Make.find(:all).collect {|m| [m.name, m.id] },
	:include_blank => true) %>

<%= observe_field("search_make",
	:update => "models",
	:url => { :action => "search_models" },
	:with => "''make_id=''+value") %>
</div>

<div id="models">
</div>

Then, inside your target action (search_models.rhtml in this case):

<%= select("search", "model", @models.collect {|m|
[m.name, m.id] },
	:include_blank => true) %>


Also see: 
http://api.rubyonrails.org/classes/ActionView/Helpers/JavaScriptHelper.html#M000402

Hope this helps.


On 8/13/05, Oliver Legg <lists-XiLho7JcZycsV2N9l4h3zg@public.gmane.org>
wrote:
> I''m trying to use rails built in AJAX support in my application,
it
> works fine while using it on a text field, but fails when trying to
> use it on a select field.
> 
> When the select box is changed I want it update a div in my form. Is
> there a way to do this using built in rails helpers and how do i do
> this with select boxes.
> 
> Thanks in advance.
> 
> 
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

You can use also "onchange" attribute and call remote function:

<%= select ''d'', ''data_id'', @data, { },
            { ''onchange'' => remote_function(
                     :url => { :action =>
''data_onchange'' },
                     :update => ''div_block'',
                     :with => ''"data_id=" +
this.value'') } %>

-- 
Kamil