[development] Issues with selecting radio buttons with JQuery

[Dan Robinson]

Folks,

Help appreciated -

I'm building a node form where the form will reveal/hide portions
depending on the users choices.  To do this I'm using jQuery to
manipulate the DOM.  I'm having a lot of issues with the radio buttons.

What I want to do is have a message pop up if the user selects a
particular radio button (in this case a "no" choice of a "Yes/No"
"set").  For this to work I need to attach an "onClick" handle to the
"no" radio button and when the user clicks evaluate and display the
message.  Because of a series of interrelated issues I've tried a number
of approaches.  The one I'm working on now is:

- I'm using the form APIs "radios" - an issue here is that "radios"
define the actual radio buttons in an array and it doesn't look like
there is a way to assign an id attribute using the forms api (as a
matter of fact there is code in form.inc which explicitly strips out an
ID at that level).
- I assign an onClick handler to the "radios" -     #attributes' =>
array('onClick' => 'CitizenClick()')
- On form load I assign an id to the specific radio button I'm
interested in -     $("[name=CitizenQ][value=no]").attr('id',
'CitizenNoButton');
- In CitizenClick() I check and take action depending - if (
$("#CitizenNoButton").attr('checked') ) {
- Please note that although I could do all this without an "id" and by
selecting the "name" instead of the "id" - it was very slow

Everything works - EXCEPT -

I am placing the radio buttons inside of a fieldset thusly -

    $form['Qualifyers'] = array(
        '#type' => 'fieldset',
        '#tree' => TRUE,
        '#weight' => 1,
    );
    $form['Qualifyers']['CitizenQ'] = array(
        '#type' => 'radios',
          '#title' => t('Are you a U.S. Citizen?'),
          '#default_value' => 1,
          '#options' => array('yes' => t('Yes'), 'no' => t('No')),
        '#attributes' => array('onClick' => 'CitizenClick()'),
    );

If I don't place it within the fieldset I can select the radio with -

$("[name=CitizenQ][value=no]")

However withing the fieldset I can't get this to work -

$("[name=Qualifyers[CitizenQ]][value=no]")

I assumed the above wouldn't work because the "[]" are special
characters so I tried escaping them -

$("[name=Qualifyers\\[CitizenQ\\]][value=no]")

Still no joy - I have been beating my head against this for a while and
would appreciate some assistance - also if I've approached this in a
fundamentally wrong way please let me know.

Thanks!


Dan