In tabular form, is there a way to select one row as the default row?

Question

Hi, I have a tabular form which lists the many addresses that a fisherman may have. The query is: select default_addr_flag, addr1, addr2, city, state, zip from addresses where fisher_id = :PXX_fisher_id.
I would like to have them set the default_addr_flag = 'Y' for ONLY ONE record....so even if they have many addresses, one must be selected as the default for any correspondence.
Are there any examples, or does anyone have a suggestion. thank you!
karen

Answer 1

Hi Karen,
I think first of all you should get yourself a browser and add-ons that allow you to inspect the HTML DOM elements. E.g. FF/Firebug/Error Console. Once you have the required tools you will be able to see for yourself what the DOM has, and then work out what you need to do.
Most members, including myself, at times post solutions without really trying them out as they appear to be "obvious" even when they are not.
Taking forward from the point where you have made the default address indication a "simple checkbox" from the Report Attributes tab, if you inspect the checkbox element you will find that it is somewhat more complex and Apex has created the elements with some JS code. E.g. this is a snippet from one of my application pages.
<td headers="IS_CUSTOMER">
<label class="hideMeButHearMe" for="f08_0001">Is Customer</label>
<input type="checkbox" onclick="if (this.checked) {apex.jQuery('#f08_0001').val('Y');} else {apex.jQuery('#f08_0001').val('');}" id="f08_0001_01" checked="checked" value="Y" name="f08_NOSUBMIT" autocomplete="off">
<input type="hidden" id="f08_0001" value="Y" name="f08" autocomplete="off">
</td>You will see that
a.Apex has created a onclick event trigger
b. If sets the value of Unchecked checkbox to null ("").
c. In my page the checkbox maps to f08, you need to see which item it maps to in your page.
d. The id of the rendered checkbox is id of hidden element + _01.
The consequence of this is that if you define a onclick trigger in the Element attributes it overrides and suppresses Apex from inserting its own JS code!
To be able to uncheck all checkboxes other than the one the user has currently checked you will need to do this:
i. In the Column's Element Attributes field write onclick="doDftAddr(this);"You could name the function the way you want it, this is an example.
ii.In the Page HTML Header write
<script type="text/javascript">
function doDftAddr(pThis) {
  va = pThis.id.split("_");
  var vb = va[0]+'_'+va[1];
if (pThis.checked) {
    vy = 'input:checked[id^="'+va[0]+'_"]'
    $("["+vy+"]").attr("checked",false);
    apex.jQuery("["+vy+"]").val('N');
    apex.jQuery('['+'input:hidden[id^="'+va[0]+'"_]'+']').val('N');
    apex.jQuery('#'+pThis.id).attr("checked",true);
    apex.jQuery('#'+pThis.id).val("Y");
    apex.jQuery('#'+vb).val('Y');
   } else {
    apex.jQuery('#'+vb).val('N');
</script>Cheers,