Apex 4.0 Cascading Select List: ajax problem with german umlaute

Hi everybody,
Apex 4.0
Dad PlsqlNLSLanguage: GERMAN_GERMANY.WE8MSWIN1252
I have problems with german umlaute and ajax cascading select lists (Cascading LOV Parent Item).
The data is populated without a page refresh in the select list when the parent select list changes but special signs like german umlaute are shown as weird characters.
Seems like there is some charset problem with ajax.
This is the only part of the application where special signs like umlaute are messed up. Everything else is fine.
I allready tried to figure out if I can escape the umlaute in the javascript (file apex_widget_4_0.js) but no success here.
Can anybody help me with this issue?
Thanks in advance,
Markus

Hi Markus,
your specified character set in your DAD is wrong. As mentioned in the installation instructions at http://download.oracle.com/docs/cd/E17556_01/doc/install.40/e15513/otn_install.htm#CHDHCBGI , Oracle APEX always requires AL32UTF8.
>
3. Locate the line containing PlsqlNLSLanguage.
The PlsqlNLSLanguage setting determines the language setting of the DAD. The character set portion of the PlsqlNLSLanguage value must be set to AL32UTF8,
regardless of whether or not the database character set is AL32UTF8. For example:Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

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I am trying to implement Denes Kubicek's Ajax Cascading Select List solution.
http://apex.oracle.com/pls/otn/f?p=31517:119
But it is not working for me.
I'm a newbie to APEX and checked the forum for advice on cascading select lists. I saw the thread for
"Cascading Select Lists - Not Working" posted by sue and the replies by Varad Acharya, but I'm still
having issues of not seeing the alerts, not able to run the pl/sql process in SQL Workshop, and not
getting the expected results.
I have a list of countries (US - USA, CA - CANADA, etc.) and a list of states for each country. When a
user selects a country I would like to show the list of states within that country.
This is what I've done so far:
Defined an application process:
Process Point: On Demand: Run ... by a page process.
Name: CASCADING_SELECT_LIST1
Process Text:
BEGIN
OWA_UTIL.mime_header ('text/xml', FALSE);
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HTP.p ('Pragma: no-cache');
OWA_UTIL.http_header_close;
HTP.prn ('<select>');
HTP.prn ('<option value="' || 99 || '">' || '- All States -'
|| '</option>'
FOR c IN (SELECT state_code || ' - ' || state_desc d, state_code r
FROM tbk_state
WHERE country_code = :cascading_selectlist_item_1)
LOOP
HTP.prn ('<option value="' || c.r || '">' || c.d || '</option>');
END LOOP;
HTP.prn ('</select>');
END;
defined and application item:
Name: CASCADING_SELECTLIST_ITEM_1
Build Option: - No Build Option -
Created a 'Form on a table with report' as follows:
Page 5: Report on TBK_HARDWARE_LOCATION
Page 6: Form on TBK_HARDWARE_LOCATION
in HTML Header of the page attributes for 'Form on TBK_HARDWARE_LOCATION' I have:
<script language="JavaScript" type="text/javascript">

</script>
<script>
function get_select_list_xml1(pThis,pSelect){
var l_Return = null;
var l_Select = html_GetElement(pSelect);
alert ('Dept no=' + pThis.value);
var get = new htmldb_Get(null,html_GetElement('pFlowId').value,
'APPLICATION_PROCESS=CASCADING_SELECT_LIST1',0);
get.add('CASCADING_SELECTLIST_ITEM_1',pThis.value);
gReturn = get.get('XML');
// gReturn = get.get();
alert('Enames=' + gReturn);
if(gReturn && l_Select){
var l_Count = gReturn.getElementsByTagName("option").length;
l_Select.length = 0;
for(var i=0;i<l_Count;i++){
var l_Opt_Xml = gReturn.getElementsByTagName("option");
appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'),
l_Opt_Xml.firstChild.nodeValue)
get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
if(document.all){
pSelect.options.add(l_Opt);
l_Opt.innerText = pContent;
}else{
l_Opt.appendChild(document.createTextNode(pContent));
pSelect.appendChild(l_Opt);
</script>
On Page 6: 'Form on TBK_HARDWARE_LOCATION' I have the following items (plus some others):
Name: P6_COUNTRY_CODE
Display as: Select List
HTML Form Element Attributes: onchange="get_select_list_xml1(this,'P6_STATE_CODE');"
Source Used: Only when current value in session state is null
Source Type: Database Column
maintain session state: Per session
Source value or expression: COUNTRY_CODE
Named LOV: LIST OF COUNTRIES
Name: P6_STATE_CODE
Display as: Select List
Source Used: Only when current value in session state is null
Source Type: Database Column
maintain session state: Per session
Source value or expression: STATE_CODE
Named LOV: - Select named LOV -
List of Values definition:
     select state_code || ' - ' || state_desc d, state_code r
     from tbk_state
     where country_code = :P6_COUNTRY_CODE
     order by 1
LIST OF COUNTRIES is defined as:
select country_code || ' - ' || country_desc d, country_code r
from tbk_country
order by 1
Now to the problem:
I run page 5 (the report) to see the list of locations and then I try to edit a record (page 6). When I
try to select a different country I get the following error (on IE):
"Problems with this web page might prevent it from being displayed properly or functioning properly.
In the future, you can display this message by double-clicking the warning icon displayed in the status
bar.
Line: 17
Char: 5
Error: Object expected
Code: 0
URL: http//cmrac4.cm.timeinc.com:7777/pls/htmldb/f?
p=114:6:1413254636072443110::::P6_HARDWARE_LOCATION_ID:2
I don't see any of the alert messages.
I also tried to run the application process code in the SQL - Command Processor (I replaced
:cascading_selectlist_item_1 with 'CA' or 'US') and got the following:
The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh
button, or try again later.
Only one top level element is allowed in an XML document. Error processing resource
'http://cmrac4.cm.timeinc.com:7777/pls/...
<select><option value="99">- All States -</option><option value="X1">X1 - X1</option><optio...
Can someone help me please?

Varad,
First, thank you for taking the time to try to help me with this problem.
When I view the page's source code (here are the first few lines):
<html lang="en-us">
<head>
<script src="/i/javascript/core.js" type="text/javascript"></script>
<link rel="stylesheet" href="/i/css/core.css" type="text/css" />
<script language="JavaScript" type="text/javascript">

</script>
<script>
function get_select_list_xml1(pThis,pSelect){
var l_Return = null;
var l_Select = html_GetElement(pSelect);
//alert ('Dept no=' + pThis.value);
var get = new htmldb_Get(null,html_GetElement('pFlowId').value,
'APPLICATION_PROCESS=CASCADING_SELECT_LIST1',0);
get.add('CASCADING_SELECTLIST_ITEM_1',pThis.value);
gReturn = get.get('XML');
// gReturn = get.get();
//alert('Enames=' + gReturn);
if(gReturn && l_Select){
var l_Count = gReturn.getElementsByTagName("option").length;
l_Select.length = 0;
for(var i=0;i<l_Count;i++){
var l_Opt_Xml = gReturn.getElementsByTagName("option");
appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'),
l_Opt_Xml.firstChild.nodeValue);
get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
if(document.all){
pSelect.options.add(l_Opt);
l_Opt.innerText = pContent;
}else{
l_Opt.appendChild(document.createTextNode(pContent));
pSelect.appendChild(l_Opt);
</script>
It looks like line 17 is:
var l_Select = html_GetElement(pSelect);
I'm still not sure why I'm getting this error and why it's not working?
Thanks,
Eti

Apex 3.2 group select list

Hi,
I just want share this if you are still in older version of Apex and you use jQuery.
I did made "plugin" for grouped select list
See sample here
http://actionet.homelinux.net/htmldb/f?p=100:86
Plugin source
;(function(){
jQuery.fn.htmldbLovOptGrp=function(o){
var t=jQuery(this);
o=jQuery.extend({
sessionValue:t.val(),
nullShow:false,
nullValue:'%null%',
nullDisplay:'%',
lovProcess:undefined,
lovGrpLabel:'GRP',
lovDisValue:'DIS',
lovRetValue:'RET',
loadingTxt:'Loading ...',
loadingCss:{'width':'80px'}
},o);
return lCreSelect(t,o);
jQuery.htmldbAjax=jQuery.fn.htmldbAjax=function(opt){
jQuery.ajaxSetup({
url:'wwv_flow.show',
dataType:'HTML',
traditional:true,
cache:false,
type:'POST',
data:{
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return jQuery.ajax(opt);
jQuery.htmldbJSON=jQuery.fn.htmldbJSON=function(opt,callfn){
return jQuery.htmldbAjax({dataType:'json',data:opt,success:callfn});
function lCreSelect(t,o,j){
t.empty().hide().parent().append(jQuery('<div/>').html(o.loadingTxt).addClass('ui-autocomplete-loading').css(o.loadingCss));
jQuery.htmldbJSON(jQuery.extend(j,{p_request:'APPLICATION_PROCESS='+o.lovProcess}),function(jd){
if(o.nullShow){lAppendOpt(t,null,o.nullDisplay,o.nullValue);}
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t.val(o.sessionValue).trigger('change').show().parent().find('div.ui-autocomplete-loading').remove();
return t;
function lAppendOpt(t,l,d,r){
var o=lCreateOpt(d,r);
if(l){
var g=lGetOptGrp(t,l);
if(g){g.append(o);}
else{t.append(lCreOptGrp(l).append(o));}
}else{t.append(o);}return true;
function lExists(p){return(p.length==1);}
function lCreateOpt(d,r){return jQuery('<option/>').val(r).html(d);}
function lCreOptGrp(l){return jQuery('<optgroup/>').attr({'label':l});}
function lGetOptGrp(t,l){var g=t.find('optgroup[label="'+l+'"]');if(lExists(g)){return g;}else{return false;}}
})();Copy code and save it to file e.g called jquery.htmldbQuery.js and upload it to workspace Static Files.
Create new page and blank HTML region.
Create select list with LOV query
SELECT null d, null r FROM dualCreate On Demand application process called GET_GRP_LOV like
DECLARE
l_sql VARCHAR2(32700);
BEGIN
l_sql :='
SELECT mgr AS grp,
   ename AS dis,
   empno AS ret
FROM emp
APEX_UTIL.JSON_FROM_SQL(l_sql);
END;Place to page HTML header
<script type="text/javascript" src="#WORKSPACE_IMAGES#jquery.htmldbQuery.js"></script>
<script type="text/javascript">
$(function(){
$('#Px_MY_SELECT').htmldbLovOptGrp({lovProcess:'GET_GRP_LOV'});
</script>Where Px_MY_SELECT is your select list name.
As I did say this need you also load jQuery. Apex 4 have jQuery , but if you are on later version see e.g. this blog post
http://www.oracleapplicationexpress.com/tutorials/66
I hope this helps someone
Br,Jari
Edited by: jarola on Aug 17, 2010 8:44 PM
Same thing seems to be work also with Apex 4.0
http://apex.oracle.com/pls/otn/f?p=40323:50
But if I have understand correctly Apex 4.0 have some build in or better thing to get same result
Edited by: jarola on Aug 17, 2010 10:54 PM
copy&paste mistake corrected
Edited by: jarola on Aug 18, 2010 12:57 AM
I hope editing post all the time is ok =).
I have not test this on any other browser than Fire Fox, so all comments are welcome.
Also I have try create similar plugin for cascading lov. Sample here
http://actionet.homelinux.net/htmldb/f?p=100:85
Maybe there is this kind plugins already for Apex 3.x, I have not just seen.
Also I'm beginner with jQuery so all help and comments is needed
Edited by: jarola on Aug 18, 2010 2:01 AM
mistake in guide corrected.

Hi Matt,
which version of APEX are you currently on?
With ApexLib Framework you can have cascading select lists in normal forms, but not in a Report or Tabular Form. Also refreshing a Report when changing a select list doesn't work out of the box. You would need to add some javascript. But i think this isn't what you wanted.
brgds,
Peter
Blog: http://www.oracle-and-apex.com
ApexLib: http://apexlib.oracleapex.info
BuilderPlugin: http://builderplugin.oracleapex.info
Work: http://www.click-click.at

How to populate another page item based on cascading select lists?

Oracle 10gXE
APEX 3.2
I've created cascading select lists based on the examples (using Javascript and AJAX) that i've seen on this forum. Thanks for help on that!
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END IF;
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l_param := l_param||'&p_start_dt=&P26_BEG_DATE.';
END IF;
IF REPLACE(:P26_END_DATE,'%'||'null%',NULL) IS NOT NULL THEN
l_param := l_param||'&p_end_dt=&P26_END_DATE.';
END IF;
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l_param := l_param||'&p_org_code=&P26_ORG_CODE_2.';
END IF;
IF REPLACE(:P26_FLAIR_ORG_2,'%'||'null%',NULL) IS NOT NULL THEN
l_param := l_param||'&p_flair_org_code=&P26_FLAIR_ORG_2.';
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IF REPLACE(:P26_BUDGET_ENTITY_2,'%'||'null%',NULL) IS NOT NULL THEN
l_param := l_param||'&p_agy_code=&P26_BUDGET_ENTITY_2.';
END IF;
RETURN l_param;
END;

Andy,
This is a great suggestion! After I posted, I started looking at a Javascript solution and figured it's probably what I had to do.
However, now the cascading select list no longer working for some reason after I added the function to concatenate the item values. When I remove the showReport() function the select list works again.
Here is what I have in the HTML Header portion of the page:
<script language="JavaScript" type="text/javascript">
function popupURL (url) {
w = open(url,"winLov","resizable=1,width=800,height=600");
if (w.opener == null)
w.opener = self;
w.focus();
function showReport()
var l_param = '&REPORTS_URL.&report=' + $v('P26_RPT_VIEW') + '.rdf&desformat=' + $v('P26_DESFORMAT') + '&destype=cache';
if ($v('P26_OLO_CODE' != '')
   l_param += '&p_olo_code=' + $v('P26_OLO_CODE');
if ($v('P26_ORG_CODE_3' != '')
   l_param += '&p_org_code=' + $v('P26_ORG_CODE_3');
popupURL(l_param);
function get_AJAX_SELECT_XML(pThis,pSelect){
     var l_Return = null;
     var l_Select = $x(pSelect);
     var get = new htmldb_Get(null,$x('pFlowId').value,'APPLICATION_PROCESS=ORG_SELECT_LIST',0);
     get.add('TEMPORARY_ITEM',pThis.value);
     gReturn = get.get('XML');
     if(gReturn && l_Select){
         var l_Count = gReturn.getElementsByTagName("option").length;
         l_Select.length = 0;
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appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'), l_Opt_Xml.firstChild.nodeValue)
get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
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l_Opt.innerText = pContent;
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Cascading Select List Doesn't work properly

I am trying to use Cascading Select List in My Application. It works for the first time when I run the page afterwards when I try to open the same page in a different window it doesn't work afterwards it doesn't work at all.My code is as follows.
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DECLARE
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platform varchar2(50);
err_code number;
err_msg varchar2(200);
BEGIN
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owa_util.http_header_close;
htp.prn('<select>');
HTP.prn ('<option value="' || 1 || '">' || '- All OS -' || '</option>');
select platform into platform from platform where platformid =:P139_PLATFORM;
if platform = 'Sun SPARC' then
for i in (select os , osid from ostype where os like '%Sola%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='Linux (x86 & x86-64)') then
for i in (select os ,osid from ostype where os like '%Linux%' or os like '%RH%' or os like '%SLES%' or os like '%OEL%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='TRU64') then
for i in (select os ,osid from ostype where os like '%Tru64%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='Windows') then
for i in (select os ,osid from ostype where os like '%Windows%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='IBM Linux on Power') then
for i in (select os ,osid from ostype where os like '%Linux%' or os like '%RH%' or os like '%SLES%' or os like '%OEL%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='IBM System z') then
for i in (select os ,osid from ostype where os like '%Linux%' or os like '%RH%' or os like '%SLES%' or os like '%OEL%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform like 'HP%') then
for i in (select os ,osid from ostype where os like '%HP%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='Itanium') then
for i in (select os ,osid from ostype where os like '%HP%' or (os like '%Windows%' and osid <> 201) or os like '%Linux%64%' or os like '%RH%64%'
order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSIF (platform ='AIX') then
for i in (select os ,osid from ostype where os like '%AIX%' order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
ELSE
for i in (select os ,osid from ostype order by os) loop
htp.prn('<option value="' || i.osid || '">' || i.os || '</option>');
end loop;
END IF;
htp.prn('</select>');
EXCEPTION
WHEN OTHERS THEN
err_code := SQLCODE;
err_msg := substr(SQLERRM, 1, 200);
INSERT INTO ERROR_TABLE (error_number, error_message)
VALUES (err_code, err_msg);
END;
2) Application Item
CASCADING_SELECTLIST_ITEM_1
3) In the Footer of the region which contains the items the following Java Script
<script>
function get_select_list_xml(pThis,pSelect){
var l_Return = null;
var l_Select = html_GetElement(pSelect);
var get = new htmldb_Get(null,html_GetElement('pFlowId').value,
'APPLICATION_PROCESS=getDet',0);
get.add('CASCADING_SELECTLIST_ITEM_1',pThis.value);
gReturn = get.get('XML');
if(gReturn && l_Select){
var l_Count = gReturn.getElementsByTagName("option").length;
l_Select.length = 0;
for(var i=0;i<l_Count;i++){
var l_Opt_Xml = gReturn.getElementsByTagName("option");
appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'),
l_Opt_Xml.firstChild.nodeValue)
get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
if(document.all){
pSelect.options.add(l_Opt);
l_Opt.innerText = pContent;
}else{
l_Opt.appendChild(document.createTextNode(pContent));
pSelect.appendChild(l_Opt);
</script>
<script>
get_select_list_xml($x('P139_PLATFORM'),'P139_OS');
</script>
For the first Select list form element properties
onchange="get_select_list_xml(this,'P139_OS')"
Please let me know what change I need to make in the code.

Vikas,
Is your page 0 a public page or it requires authentication? I remember having the same
problem a while ago.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/apex/f?p=107:7
http://htmldb.oracle.com/pls/otn/f?p=31517:1
-------------------------------------------------------------------

3 Cascading Select Lists?

I've successfully implemented the AJAX cascading select list found on Denes' site, but I need to add a 3rd select list and I have not been successful with that! I've duplicated all of the steps (created a new application process, a new application item, duplicated the javascript functions using different names throughout) but I'm still missing something. My 3rd select list does not populate based on the LOV in my second select list. Is this even possible? Does the pFlowID value have anything to do with it? I tested my application process and my LOV query in the SQL Command window and both worked/returned data. Any ideas?
Thank you!
T

Do you mean this example:
http://apex.oracle.com/pls/otn/f?p=31517:119
It already has three select lists with a full explanation and the corresponding code.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
-------------------------------------------------------------------

Cascade select list tack few second to execute application process

Hi,
i have created some application proces fro cascading select list.
BUt when i select some value from select list then list is drpo down after click on slect value it show me drop down list value for few second .
i want when i click on selectted value then immediate relect this cascade list.
How can i resolve it.
Thanks

I am trying to guess from what I understood from your question.So correct me if I am wrong.You have set up cascading select list using ondemand process (onchange call process,retrun XML/JSON , parse the reyurn data and create/append option nodes to the child shortlist ) . The problem is that the child select list has the drop down available for a few second until the ajax HTTP request finishes completion.
Now you don't want any drop own to be available as soon as you select something.
If this is the case, add a line of code that disables the child select list as the first line of the called SJ function and enable it in the last line of the function
onchange="my_cascade_function()"
function my_cascade_function()
$x('SELECT_CHILD_ITEM').disabled=true;
//do ajax request here
//process retrun value, create select list
$x('SELECT_CHILD_ITEM').disabled=false;
}Does that help ?

Help with Cascading Select List in Tabular Form

Hello Friends,
I am trying to implement Denes Kubicek's sample for Cascading Select list and ran into this error:
Please help me identify what I might have missed ???
<code>
The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later.
Only one top level element is allowed in an XML document. Error processing resource 'http://apex.oracle.com/pls/apex/f?p=12...
<select><option value="0">- Select Employee (0) -</option></select><html lang="en-us" xmlns:htmld...
</code>
Please find below the list of activities I performed:
1.Created the region source
2.Created the hidden items
3.Created the buttons and items
4.Created the application process for MRU and Delete
5.Created the Application item [ TAB_CASCADING_ITEM]
6.Created the Application Process[tab_casc_sel_list]
Any clue/pointers to debug this are welcome.
I tried the above on apex.oracle.com; WS: CHAITANYAPATCHIPULUSU; USERNAME :[email protected]
PWD:Satya123 in APPLICATION : 12855 and Page :35
Regards..

OK, you didn't have the background process as an on demand process.
In the MRU and MRD process, you were referencing the wrong variables for the count. (as in deb's case, it's p176, but in your case its p35).
In the javascript function, the call that is supposed to assign : TAB_CASCADING_ITEM a value, isn't working (I believe).

Apex 4.0 Cascading Select List: ajax problem with german umlaute

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