Cascading LOV bug??

Hi all...
please help with this issue.
Not sure whether it is a bug or browser issue.
APEX: 4.1
Browser: IE 7
Database: 11g
If i have a cascading lov, and if i have a some javascript
under the HTML FORM ELEMENT ATTRIBUTES ""onchange="alert('hi');"""
The on-change event is firing twice.
why is it firing onchange twice?
please check the following app.
http://apex.oracle.com/pls/apex/f?p=41803:2
select a dept, you will get 2 alert messages.
Is there any fix for this?

Hi Earl...
Thanks for the reply.
Yup..as you said , it seems it a browser issue (IE 7).
Instead of using the onchange javascript .. i moved my javascript code to "dynamic action". It works fine now.
Thanks for the reply.

Similar Messages

Apex 4.2.1 - mobile theme display bugs and Cascading LOV bug

I've setup a test at http://apex.oracle.com/pls/apex/f?p=35331 - username/password is test/test
Simple page to show some issues I'm running into. Wondering if work-arounds exist or if a patch would be available before we'd go live.
First and second issue are the same I believe. So - a normal text box (label1) looks fine. But, Label2 is a Display only item and Label3 is a read-only select list item. As you can see - both of the values appear smack dab right beside the label and not in line with the other fields. It's totally ugly and not usable as is. I've tried to move this over, but the label goes with it. I can see no way of doing it, but wondering if there's some hack I can put in to solve it...
The last issues is with a cascading LOV. Simple table setup. Static on the first, the second a simple query that filters on the first. If you set the select list to Value Required and not to display null values - then when you click on the Second List button - it just hangs. The page is unusable. I suspect this has to do with the null or something. But - doesn't appear to matter if anything is chosen. Note - if the list is large - which I think then uses a different UI control, this is fine. Only when one of the lists is small does the issue reproduce.
Any workarounds or fixes? Any ideas?
Thanks

Hi,
I would suggest to not mix different questions and a thread for each of them. Makes it easier for others to follow.
About your problem with the cascading LOVs, it appears that this is/was a bug in jQuery Mobile which we use under the hood. I was able to reproduce the problem with APEX 4.2.1 using jQM 1.2.0, but was not able to reproduce it with APEX 5.0 which will use jQM 1.3.0RC1 or higher. The problem occurs if a select list is empty.
There are different workarounds available:
1) set the attribute "HTML Form Element Attributes" of P1_CLOV_2 to data-native-menu="false"or
2) set the attribute "Display Null Value" of P1_CLOV_2 to Yes and "Null Display Value" to - select - (or something similar). The "Value Required" = Yes will still guarantee that a value has to be picked. Having the extra null entry will guarantee that the select list always contains an entry, that seems to workaround the bug in jQuery Mobile.
I have filed bug 16355963 - jquery mobile: empty select list causes javascript error
to track that this is definitely fixed in APEX 5.0.
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

4.2.1 Bug: Current values of child cascading LOVs are LOST.

Hello, ApEx Team!
This bug affected 4.1.1 and 4.2.1 but with different behavior. It seems that someone was trying to fix it.
According to docs "whats new in 4.1" a value of refreshed child cascading lov is derived from default value settings of select list.
Please follow these steps to see the bug.l builder-work done for you here http://apex.oracle.com/pls/apex/f?p=14110:1
1.Create primary select list P1_SEL1.
Display null value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     union all
    select 'ccc' name,'c' id
      from dual2.Create child select list P1_SEL2.
Cascading LOV Parent Item: P1_SEL1
Page Items to Submit: P1_SEL2 (I strongly believe that this item should be submitted automatically along with Parent Item)
Display Null Value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     where :P1_SEL1 in ('b','c')
     union all
    select 'ccc' name,'c' id
      from dual
     where :P1_SEL1 in ('c')
Default: return :P1_SEL2;
Default Value Type: PL/SQL Function Body3.Run app. and manually change P1_SEL1 and P1_SEL2 to 'bbb'.
4.Manually change P1_SEL1 to 'ccc'.
h2.
In apex 4.1.1..
you see that P1_SEL2 is resetted to NULL automatically. The value of P1_SEL2 is LOST. Although I tell apex to submit P1_SEl2 value to set its session state, but the session state still remains NULL.
The session state of P1_SEL2 is always NULL and I have no idea how to set it as it is set in a browser at the moment of changing parent LOV P1_SEL1.
h2.
Now apex 4.2.1.
It seems this bug is fixed. Indeed it is NOT fixed.
To see this bug in 4.2.1 just...
5.Create a third child select list P1_SEL3 which depends on P1_SEL2.
Cascading LOV Parent Item: P1_SEL2
Page Items to Submit: P1_SEL3 (Again, I hope you will always submit current item automatically as you do for the parent item)
Display Null Value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     where :P1_SEL2 in ('b','c')
     union all
    select 'ccc' name,'c' id
      from dual
     where :P1_SEL2 in ('c')
    Default: return :P1_SEL3;
    Default Value Type: PL/SQL Function Body6.Run app. again. Manually set P1_SEL1, P1_SEL2 and P1_SEL3 to 'bbb'.
7.Change P1_SEL1 to 'ccc' and see the bug:
1) P1_SEL2 is reset to NULL for just a short time and than restored to 'bbb'.
2) P2_SEL3 is reset to NULL. So the session state was NULL for this item at the moment of calculating default value. As a result the value of child cascading lov is LOST.
So this bug is still present in 4.2.1.
Can I hope to get workaround for this problem in 4.1 and 4.2?
Thank you,
Vladimir
Edited by: vgoncharov on 17.12.2012 19:37
Edited by: vgoncharov on 17.12.2012 22:45

Good to hear this is already being worked on.
When we tried to work around the "Automatic detection" bug - changing the "Application Language Derived From" to "Application Preference" or "Session" - we hit issue that some page processes were not firing in translated application.
See Page processes not firing in Translated applications
Jan

Cascading LoVs in Apex 4 based on a shuttle box

I've set up cascading LoVs based on a shuttle box. When values are moved to the right-hand side of the shuttle box, the cascaded LoV items have their existing values cleared.
Is this a bug? Is there a fix or a workaround?

Hi again,
I made an unconditional process, sequence 1, but the only
thing working is the :P11_message is filled.
BEGIN
htp.prn('<script>alert(''Two is more then one'', Ok)</script>');
htp.prn('<script language="JavaScript" type="text/javascript">alert(''TEST'')</script>');
htp.p('<script>alert(''Two is more then one'', Ok)</script>');
htp.p('<script language="JavaScript" type="text/javascript">alert(''TEST'')</script>');
htp.p ('javascript:confirmDelete(htmldb_delete_message,''TEST'');');
htp.prn ('javascript:confirmDelete(htmldb_delete_message,''TEST'');');
htp.print ('javascript:confirmDelete(htmldb_delete_message,''TEST'');');
htp.p('TEST');
:P11_MESSAGE := 'TEST';
end;
Does any one have more suggestions.
Hugo

Cascading lovs in Jdeveloper R2

on Jdev R2.
I was doing several different Test with Jdev R2 regarding to cascading Lov and lovs components.
here are results.
lets split them in two flavors.
I. Forms.
a) cascading lovs works fine only if you use : input text item with lovs. (this one works fine even if you do not set autosubmit on the master and partial trigger on dependent lovs, .......cool)
b) if you choose selectOneChoise, "what is really nice for short list" it does not work. not even if you set autosubmit and partial trigger.
II. af:table
a) on editing mode: editAll
* using input text with lov works (you do not need to set autosubmit/partial triggers) but every time when you select a value from a list, an ugly error araise saying : field1 is required. field2 is required...to all require attributes (you can work after click)
* using selectOneChoise did not work. after you select the first lov the next lov is surrounded by red square and never get refreshed.
b) on editing mode: clickToEdit :
this is really cool and fast, but cascading lovs does not work at all. not even input text with lovs
has anybody any feedback/workaround/idea on this one, or should we wait until these bug get fixed, hopefully in the new release.
also I was wondering what is the best approuch to execute some java code on load/unload.?
thank you for any help.
Luis

to call java on load use af:clientlistener along with af:serverlistener.. use the type as load
http://blogs.oracle.com/jdevotnharvest/entry/how-to_call_server_side_java_from_javascript
or use the beforephase and afterphase property of f:view, refer navaneeth code here
popup on page load using managed bean, using jdev-11.4
use af:document's onunload property for unloading event and java calls

LOV Bug with rendering result?

Hey,
I'm attempting to create a basic LOV using either the "ADF LOV Input" or "ADF LOV Choice List" components.
When I try to use these components with a small set of data they behave as one would expect, however I run into some odd behavior when the list behind the LOV is large and the component is required to fetch additional rows of data as the user scrolls through the options.
With the LOV Input, as I scroll through the data it is retrieved fine, however when I select a value from the bottom half of the list, the component on the page does not update with the selected value and the console in JDeveloper throws the following [truncated] stack trace:
SEVERE: Server Exception during PPR, #1
java.lang.NullPointerException
     at oracle.adfinternal.view.faces.model.binding.RowDataManager.getRowIndex(RowDataManager.java:171)
     at oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding$FacesModel.getRowIndex(FacesCtrlHierBinding.java:417)
     at org.apache.myfaces.trinidad.component.UIXIterator._fixupFirst(UIXIterator.java:310)
     at org.apache.myfaces.trinidad.component.UIXIterator.__encodeBegin(UIXIterator.java:297)
     at org.apache.myfaces.trinidad.component.UIXCollection.encodeBegin(UIXCollection.java:517)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:271)
     at oracle.adfinternal.view.faces.renderkit.rich.SimpleInputListOfValuesRendererBase$ListOfValuesDialogRenderer.encodeContent(SimpleInputListOfValuesRendererBase.java:598)
     at oracle.adfinternal.view.faces.renderkit.rich.PanelWindowRenderer.encodeAll(PanelWindowRenderer.java:190)
     at oracle.adfinternal.view.faces.renderkit.rich.DialogRenderer.encodeAll(DialogRenderer.java:135)
     at oracle.adf.view.rich.render.RichRenderer.delegateRenderer(RichRenderer.java:846)
     at oracle.adfinternal.view.faces.renderkit.rich.SimpleInputListOfValuesRendererBase$ListOfValuesPopupRenderer.encodeAllChildren(SimpleInputListOfValuesRendererBase.java:634)
     at oracle.adfinternal.view.faces.renderkit.rich.PopupRenderer.encodeAll(PopupRenderer.java:225)
     at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:815)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:733)
It looks as though the View Object on the back-end is getting populated with the correct value selected from the list (I have a second, cascaded LOV built off the value selected which is populating with the correct data) however the front-end is not getting populated with the correct data.
With the second LOV component (ADF LOV Choice List) I am completely unable to scroll through the list of values; the component hangs as soon as it attempts to fetch any more data and throws the following [truncated] stack trace in the JDeveloper console:
SEVERE: Server Exception during PPR, #2
java.lang.NullPointerException
     at oracle.jbo.uicli.binding.JUCtrlListBinding$JUCtrlListBindingItemRef.get(JUCtrlListBinding.java:3006)
     at javax.el.MapELResolver.getValue(MapELResolver.java:164)
     at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
     at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
     at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
     at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
     at org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:70)
     at oracle.adfinternal.view.faces.renderkit.rich.ValueRenderer.getValue(ValueRenderer.java:170)
     at oracle.adfinternal.view.faces.renderkit.rich.ValueRenderer.getConvertedString(ValueRenderer.java:129)
     at oracle.adfinternal.view.faces.renderkit.rich.OutputTextRenderer.encodeAll(OutputTextRenderer.java:105)
     at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:815)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
If this is indeed a bug with the ADF components themselves attempting to lazy-load the values in the list, is there a way to force the component to simply load the entire list up-front instead of as the user scrolls? This would be an acceptable workaround for my application.
For the record, the View this page is based off runs flawlessly in the BC tester. Also, incase this helps any, the LOV is not based on any sort of Fk link / association. It is built upon accessor attributes (and bind variables and view criteria in the case of the mentioned cascading LOV).
Thanks in advance for the help,
Chris

Chris,
can you provide instructions how to reproduce this based on the HR schema (e.g. Departments/Employees table). If its easier for you to create a testcase, please send it to frank. /nimphius /@ oracle.com (please remove blanks and slashes) in a zip file, where you rename the "zip "extension to "unzip"
Frank

Cascading LOVs (v4) and retaining the child value

I've implemented the default delivered implementation in version 4 (4.0.2.00.07 to be exact) of cascading LOVs. Working fine except for one thing...after refresh of a child LOV, the previously selected value is wiped out even when it's still a valid value in the child LOV. If it's an invalid value, I can understand that it would be wiped out, but if it's still valid, I'd like it to be retained.
Example...let's say I have these two select-lists (parent and child).
P100_PARENT
P100_CHILD
P100 Child's SQL references P100_PARENT:
where b.child = NVL(a.parent,b.child)
Optimize refresh is also set to 'No' because I need the child to refresh to all children selections when parent is null.
In short, the parent is optional. If Parent is null, show all child options regardless of Parent. If Parent is defined, show only the child options for the parent.
So when parent is null, I get all child options (OK). I pick one.
If I go to parent and change it to a specific value that IS the parent of the child I chose, my expectation is the child select list should refresh (it does) but if my chosen value is still in the list, it should scroll to it and select it. Instead, it wipes it out.
To put some values into the example...
Let's say parent values are:
A
B
C
null
Let's say child values are numbers such that valid values are:
1 through 10 when parent is A
11 through 20 when parent is B
20 through 30 when parent is C
1 through 30 (any child value) when parent is null.
So I have a null parent LOV value and the child shows me 1 through 30 (OK). I pick 15.
I change the parent to 'B'. Child list refreshes (OK). But while 15 is still a valid value in the list, it is not selected again (my value is wiped out). I still want it to have '15' selected.
Any workaround? Is this a bug? Enhancement opportunity?

Hi Matt,
have you had a look at Skill Builders "Save Value on Cascade" dynamic action plug-in? See http://skillbuilders.com/oracle-apex/Application-Express-APEX-Consulting-Training.cfm?tab=free-plugin-downloads
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

Bind variable problem in cascading LOVs

Hi,
after upgrade from APEX 3.0 to 3.1 all my cascading LOVs stopped working correctly. First level LOV is OK, but the second level LOV, which contains a bind variable in its SQL code, fails. Debugging shows that the bind variable referrencing to the value of the first level LOV is empty. It has worked without problems in 3.0. The bind variable format is traditional :ITEM
This is an example of the LOV SQL:
SELECT PSKUP_CZ display_value, ID return_value
FROM PSKUP
WHERE sk_id = :P1_SKUP
ORDER BY 1
Where :P1_SKUP refers to the vaule of the top level LOV.
In Oracle® Database Application Express Release Notes Release 3.1 in chapter "3 Open Bugs and Known Issues", I've only found a short remark called "Problems with Queries Containing a Bind Variable and a String with Two Dashes". The recommended solution here was to use v('P18_X') instead of :P18_X
I tried that but with no effect on my problem.
Anybody has similar experience? Any workarounds?
Thanks in advance,
Zdenek

Hi Zdenek,
DV, NV, V are an optional component of the ApexLib framework. Actually they don't have anything to do with the framework itself.
Because of the nature of this functions they have to have a hard coded reference to the FLOWS_XXX schema, but which causes problems if APEX is upgraded to a new version and the functions are not altered.
I will probably removed them from the installation instructions or add a big remark that they have to be altered after an upgrade, because this kind of threads are re-occurring after each new released APEX version.
Thanks
Patrick
My APEX Blog: http://inside-apex.blogspot.com/
The APEX Builder Plugin: http://builderplugin.oracleapex.info/ New
The ApexLib Framework: http://apexlib.sourceforge.net/

Get('XML') doesn't work, but get() does in javascript - CASCADING LOVs

I'm trying to get cascading LOVs working in Apex 3.1.0 in Oracle 11g. When I call get.get('XML') it returns null in firefox and empty string in IE6. If I change it to call get.get() then it returns the XML as a string into Javascript.
The Application process is getting called in both scenarios as i've put PL/SQL logging to disk in order to prove it. The XML being returned is very basic so i'm sure it's not a problem with formatting. I'm not getting any exceptions thrown in javascript either.
Is it possible to use get.get() and then convert the text into an XML object which is returned as per get.get('XML') which at least will allow me to get something working ?
thanks
<script language="JavaScript" type="text/javascript">
function getBusinessFieldJS(pThis, pSelect)
alert('getBusinessFieldJS');
try
var l_Return = null;
var l_Select = html_GetElement(pSelect);
var get = new htmldb_Get(null, html_GetElement('pFlowId').value, 'APPLICATION_PROCESS=GET_DATA_FIELDS_XML', 0);
/*get.add('F120_GETBUSINESSFIELD_ITEM',pThis.value);*/
gReturn = get.get('XML');
alert('gReturn=' + gReturn);
alert('gReturn.value=' + gReturn.value);
if (gReturn == null)
alert('gReturn is null');
if(gReturn && l_Select)
var l_Count = gReturn.getElementsByTagName("option").length;
alert('l_count='+l_Count);
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;+
+ }+
+ catch (e)+
+ {+
+ alert('Exception : ' + e);+
+
}+
+}+

Hi,
I've been trying to replicate your problem here: [http://apex.oracle.com/pls/otn/f?p=37055:1]
My application process is:
BEGIN
OWA_UTIL.mime_header ('text/xml', FALSE);
HTP.p('Cache-Control: no-cache');
HTP.p('Pragma: no-cache');
OWA_UTIL.http_header_close;
HTP.prn('<select>');
HTP.prn('<option value="-1">Please Select</option>');
HTP.prn('</select>');
END;(Just copied from your post and XML changed to xml, otherwise untouched)
And my page has a simple HTML region with the source of:
<div id="XMLOUTPUT" style="border:1px solid blue; width:200px; height:200px;"></div>
<div id="XMLOUTPUT2" style="border:1px solid blue; width:200px; height:200px;"></div>
<script type="text/javascript">
function getMyXML()
var l_Return = null;
var get = new htmldb_Get(null, html_GetElement('pFlowId').value, 'APPLICATION_PROCESS=RETURN_XML', 0);
gReturn = get.get('XML');
var d = html_GetElement('XMLOUTPUT');
d.innerHTML = gReturn;
var d2 = html_GetElement('XMLOUTPUT2');
d2.innerHTML = get.get();
var s = gReturn.getElementsByTagName("select");
alert(s.length);
</script>
<a href="javascript:getMyXML();">Click</a>Click on Click at the bottom of the page. The first DIV gets the get.get('XML') object and the second one the get.get() and a popup message tells you how many "select" items are in the XML version.
As far as I can see, this works fine.
Andy

How to use a cascading LOV as a Web Services Consumer?

How to use a cascading LOV as a Web Services Consumer?
We are trying to populate a prompt programmatically.
Our program is a Web Services Consumer.
As an example we use Island Resorts Marketing
The cascading LOV for City is
Country -> Region -> City
The City object is key-aware to the customer table
The query is
Customer | Revenue
(where) City = [prompt]
In order to make the key-awareness work, we must select the value (rowIndex) from the LOV
When we run our program below, the LOV for City is not populated, as expected since we must first select the Country, then the Region.
The code snippet below shows that the LOV for Country is populated. We have no idea how to go from there.
Any hint will be immensely appreciated.
Let us know if anything is unclear in the code.
Source
RetrieveMustFillInfo retrieveMustFillInfo = RetrieveMustFillInfo.Factory.newInstance();
        RetrievePromptsInfo retrievePromptInfo = RetrievePromptsInfo.Factory.newInstance();
        retrievePromptInfo.setPromptLOVRetrievalMode(PromptLOVRetrievalMode.ALL);
        retrievePromptInfo.setRefreshReturnedLOVs(true);
        retrievePromptInfo.setReturnLOVOnMustFillPrompts(true);
        retrieveMustFillInfo.setRetrievePromptsInfo(retrievePromptInfo);
        // *-- need the "Refresh" action to get the .promptToBeFilled
        Action[] boActions = new Action[1];
        boActions[0] = Refresh.Factory.newInstance();
        try {
            documentInformation = reportEngine.getDocumentInformation(Integer.toString(infoObject.getID()), retrieveMustFillInfo, boActions, null, null);
            m_Token = documentInformation.getDocumentReference();
        } catch (Exception ex) {
            System.out.println(GetWSError(ex));
            return;
        if (documentInformation.getMustFillPrompts()) {
            PromptInfo[] promptInfoS = documentInformation.getPromptInfoArray();
            for (PromptInfo promptInfo : promptInfoS) {
                System.out.println(String.format("Prompt '%1$s', hasLOV=%2$s", promptInfo.getName(), (promptInfo.getHasLOV() ? "Yes" : "No")));
                if (promptInfo.getHasLOV()) {
                    LOV boLOV = promptInfo.getLOV();
                    for (Value boLOVValue : boLOV.getValuesArray()) {
                        System.out.println(String.format(" LOV item '%1$s' RowIndex=%2$s", boLOVValue.getColumnsArray(0), (boLOV.getRowIndexed() ? boLOVValue.getRowIndex() : "")));
                System.out.println("--End LOV");
                PromptInfo[] promptInfoS2 = promptInfo.getPromptToBeFilledArray();
                if (promptInfoS2.length > 0) {
                    PromptInfo promptInfo2 = promptInfoS2[0];
                    System.out.println(String.format(" linked to %1$s", promptInfo2.getName()));
                    if (promptInfo2.getHasLOV()) {
                        LOV boLOV2 = promptInfo2.getLOV();
                        for (Value boLOVValue : boLOV2.getValuesArray()) {
                            System.out.println(String.format(" LOV item '%1$s' RowIndex=%2$s", boLOVValue.getColumnsArray(0), (boLOV2.getRowIndexed() ? boLOVValue.getRowIndex() : "")));
                        System.out.println("--End LOV");
Result
Prompt 'Enter value(s) for City:', hasLOV=Yes
--End LOV
linked to Enter value for Country of origin
LOV item 'Australia' RowIndex=6
LOV item 'France' RowIndex=2
LOV item 'Germany' RowIndex=4
LOV item 'Holland' RowIndex=7
LOV item 'Japan' RowIndex=5
LOV item 'UK' RowIndex=3
LOV item 'US' RowIndex=1
--End LOV

Hi,
Refer SAP Note 1278947. You would require a Service Market Place logon to access this article.
Let me know if this helps.
Regards,
Shreyans Surana

How to have cascading lov for a single column in tabular form

Hi,
How to have a cascading lov for a single column in tabular form
ie i have one employee name column
in tabular form if v pressed add row then one row ll be added
In my scenario based on first row value
the second row value to be displayed
To achieve this what i have to do ..
Regards,
Pavan

READ Cascading select list on tabular form and
Oracle APEX 4.0: Cascading LOVs/Select Lists | Inside Oracle APEX by Patrick Wolf BLOG
helps you,
Pars.

Cascade LOV in Apex 4.0

Hello Apex Fun
how can i make cascade list of value in Apex 4.0 ? i tried cascade which enabled in list of item properties but contain problems , please help me
also when use that cascade the Arabic characters shown unclear ..
Edited by: Moh Loay on Aug 24, 2010 2:46 PM

Hi Moh Loay,
I think you have to help me with that one, because I tried to reproduce that on apex.oracle.com and was not able to.
1) I have created page http://apex.oracle.com/pls/apex/f?p=47158:22 which is a cascading LOV on the tables DEPARTMENTS and EMPLOYEES.
2) For Department "Construction" I modified some of the employees to contain arabic and chinese characters
3) I executed above page
4) Changed the department to "Construction" which refreshed the employees select list
5) Opened the Employees select list and everything shows up as I have entered it.
Can you please verify with the above page that it looks good for you as well. Maybe it's an operating system/browser issue?
If the above test case works for you, can you please create a test case with your failing data on apex.oracle.com so that I can have a look what's actually wrong. After you have done that, please provide the workspace, user and password so that I can access your application.
Thanks
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins

Creating a Cascading LOV in an Interactive Report

version 4.1.1.00.23
Hello,
Would someone help me with creating a Cascading LOV in an Interactive Report?
I'm not finding much help searching Google or the forum.
Thanks,
Joe

I used this example but I cant show picture in my region using this procedure. It displays simbol for broken image. Any help. I even added grants for procedure, but it just does't work. This is how I call procedure in html region:<img src="#OWNER#.display_thumb?p_photo_id=3084374128401555434" />

Cascading LOVs in a report region

Can you create a cascading LOV in a report region? All of the examples I find are in a HTML region.

Swosh,
I think that this approach is better than the one from Vikas:
http://htmldb.oracle.com/pls/otn/f?p=31517:176
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://htmldb.oracle.com/pls/otn/f?p=31517:1
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Resetting a Form with Cascading LOVs (Apex 4)

A standard reset button cannot reset cascading LOVs properly. Let's assume we have a parent LOV and a child LOV. When one changes the selection in the child LOV, reset can undo this. But when he changes the selection in the parent LOV, reset will undo only the parent LOV but not the child LOV. The child LOV remains unchanged (however the selection is lost) and therefore shows a list that does not correspond to the entry now shown in the parent LOV.
Has anybody found a solution for this, a reset action that can reset cascading LOVs completely and properly?
Regards
Roland

Roland,
i didn't try this myself but maybe you succeed with triggering the onchange-event of your parent-select-list (this should cause the child select-list to be refreshed).
Or you could try if a form region has a apex "refresh" event (i know that refresh works on reports).
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

Cascading LOV bug??

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