How do I clear application level item of the last value it held?

Question

See next post - I oopsed the first try.
Edited by: user3034406 on Jul 28, 2009 1:48 PM

Answer 1

Using oracle 11g, apex version 3.0.
Ok, so I am developing a survey with questions and their related answers (either radio group or checkbox depending). I have it set up so that when a user clicks a checkbox, an apex_collection is updated. In the pl/sql of my region source, I left outer join to this collection to display the checkbox as checked when its value is found in the collection. Using this same strategy, I can delete a value from the collection when a user uncheckes a box....
The problem I am having is this: the very last value that a user checks initially (i.e. takes checkbox from unchecked to checked status) is staying in my application level item :ADD_THIS, so when the page is refreshed or whatever, this value gets added to my collection, which means it shows as checked. Well, I think this is what is happenig...!
I have tried setting the app level item to null in a computation process, but this screwed everything up and nothing would work right....
So, if someone knows when, how and where to reset an app level item?
NOTE: I barely know javascript (getting the hang of simple stuff but I have a long way to go!) and am a little shaky on things like session state, before load, after load, etc., etc, when it comes to apex. Please be patient with me! (smile)
Here's what's going on script wise:
PL/SQL in region source of page: builds list of questions and their associated answers
DECLARE
#####stuff here####
CURSOR multiple_answer_cur IS select apex_item.checkbox(1, nvl(a.c001, a.answer_seq),'onclick="f_updateMember(q_seq, a_seq);"', a.c001, null, v_q_seq) cbox, a.answer_text, qa.question_seq, a.answer_seq
*<etc. etc....>*
CURSOR single_answer_cur IS select apex_item.radiogroup(radio_global, nvl(a.c001, a.answer_seq),a.c001, null, null, null, 'f_updateMember(q_seq, a_seq)',null, v_q_seq) rgroup, a.answer_text, qa.question_seq, a.answer_seq
*<etc. etc....>*
BEGIN
####stuff here that builds survey and writes it using HTP. to page####
END;
Javascript function to add or delete from collection (in header of page)
function f_updateMember(q_seq, a_seq){
--determine if value represents checked or unchecked box
var isString = /q|a/;
var getThis = document.getElementById(q_seq).value;
var findinValue = getThis.search(isString);
var getaddthis = new htmldb_Get(null,$x('pFlowId').value,'APPLICATION_PROCESS=AddCheckboxValue',0);
var getdelthis = new htmldb_Get(null,$x('pFlowId').value,'APPLICATION_PROCESS=DelCheckboxValue',0);
--onclick, if an 'a' or 'q' is found in value, this box is in the collection and therefore checked, so delete it
if (findinValue != -1) {
getdelthis.add('DELETE_THIS', "q"+q_seq+"a"+ a_seq);
getdelthis.GetAsync(function(){return;});
getdelthis = null;
}else{
--onclick, no 'a' or 'q' is found in value, this box is not in the collection, so add it
getaddthis.add('ADD_THIS',"q"+q_seq+"a"+ a_seq);
getaddthis.GetAsync(function(){return;});
getaddthis = null;
Snippet of page source
<b>Question number one</b>
<input type="checkbox" name="f01" value="q78a489" checked="checked" onclick="f_updateMember(78,
489)" id="78" />Answer option one for question one>
<b>Question number two</b>
<input type="checkbox" name="f01" value="483" onclick="f_updateMember(77, 483)" id="77" />Answer
option one for question two>
Edited by: user3034406 on Jul 28, 2009 12:18 PM