gmane.comp.lang.ruby.rails

John Butler | 16 May 22:05

radio button observe field only triggers once


Hi,

If i add field observers to radio button fields they trigger once but
then nothing after that.  I have multiple fields in a form that i need
to know if one of them changes and which spedific field.  Below is an
example of two foelds i tested and they trigger once with the alert but
then nothing after that. I also tried individual observers for each
field test_yes and test_no but with the same issue.

<%= radio_button_tag 'test', "yes" %>
<%= radio_button_tag 'test', "no" %>

<%= observe_field('test',
                  :on => 'click',
                  :function => "alert('Element Yes changed')"%>

Does anyone know why or experienced something like this before?

JB
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AndyV | 17 May 22:15

Re: radio button observe field only triggers once


If I remember correctly, I think you'll need an id on each radio
button and need to observe each radio button individually.  The
'grouping' of the radio buttons into a single field value that's
posted back does not replace the fact that it's actually a collection
of individual html elements on the form.

On May 16, 4:07 pm, John Butler <rails-mailing-l...@...>
wrote:
> Hi,
>
> If i add field observers to radio button fields they trigger once but
> then nothing after that.  I have multiple fields in a form that i need
> to know if one of them changes and which spedific field.  Below is an
> example of two foelds i tested and they trigger once with the alert but
> then nothing after that. I also tried individual observers for each
> field test_yes and test_no but with the same issue.
>
> <%= radio_button_tag 'test', "yes" %>
> <%= radio_button_tag 'test', "no" %>
>
> <%= observe_field('test',
>                   :on => 'click',
>                   :function => "alert('Element Yes changed')"%>
>
> Does anyone know why or experienced something like this before?
>
> JB
> --
> Posted viahttp://www.ruby-forum.com/.

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John Butler | 18 May 12:19

Re: radio button observe field only triggers once


AndyV wrote:
> If I remember correctly, I think you'll need an id on each radio
> button and need to observe each radio button individually.  The
> 'grouping' of the radio buttons into a single field value that's
> posted back does not replace the fact that it's actually a collection
> of individual html elements on the form.
> 
> On May 16, 4:07 pm, John Butler <rails-mailing-l...@...>

Ye ive tried adding an observer to each individual radio button but the 
same thing happens.

<%= observe_field('test_yes',
                  :on => 'click',
                  :function => "alert('Element Yes changed')"%>

<%= observe_field('test_no',
                  :on => 'click',
                  :function => "alert('Element Yes changed')"%>

Im just going to have to post the whole form back and find out which one 
is set to 1 and do it that way.

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